Gens Z and Alpha have been raised in a time when the even the POTUS was telling everyone that the US isn't special. And a huge portion of the tribes lapped it up and continued to repeat it to the point that many / most of these generations aren't patriotic.
It's sad, as it starts at home, yet there are so many people who will doggedly speak ill of the US while never showing pride. And God forbid you allow the media to influence your view. It's no wonder so many lack patriotism.
I think you hit the nail on the head on the part you were addressing.
I think we can list a number of contributors to the (seeming) decline in patriotism, and I only say "seeming" because at times I tend to try to be optimistic that the part where we pull for the country exceeds the part where we criticize it for - yes - the bad things we've done.
1) We've Had It So Good
Lost in all the income inequality, affordability, inflation, and "how bad is that Trump guy" commentary is the simple fact that we really have had it GOOD for a long time in this country. Nobody is getting drafted into a controversial war nowadays, we aren't living hand to mouth with 24% unemployment like it's the Great Depression, we don't have a BUNCH of hungry kids anymore (certainly not like we did), and people still want to come here from other less fortunate nations. YES, we had a pandemic - the whole damn world had one. But overall, our recovery from bad things has gone so well that just a decade after the collapse of the housing market destroyed so much capital and retirements, people were right back to their lousy spending habits.
We REALLY HAVE had it good. That's not to say there aren't problems - but if we're being honest, the only difference in our previous problems and now is people can get online and whine about their predicaments and lazy bloggers can amplify them. My grandfather (1909-1985) worked at the West Point Pepperell textile mill in Lanett, Alabama, a town named for the two guys (Lanier and Bennett) who started the mill. His wife - my grandmother - worked there as well. They didn't own a car until they were in their late 40s, they walked three blocks to work in a house built by the mill for the workers. He also delivered newspapers once he got a car, just to make extra money to send their three kids to college. ALL THREE WENT and ALL GRADUATED, incredibly rare for folks born between 1936 and 1946. They never had the "good life" folks talk about now, never at any time, but they made it work.
They didn't have an I phone or a computer to whine about their hurting fingers and exposure to brown lung. They didn't have the time, either. The reality is, we have had it REALLY good in this country. My Oregon bud is in England right now and his own daughter - a hardcore liberal socialist who wants to defund the police - looked at him yesterday and said, "America blows this place away for convenience."
2) Fathers Not in the Home
This one has been beaten to death, but with the point about patriotism being passed down through families, the constant Baby Daddy phenomenon (and no folks, it isn't just a black thing, either) doesn't help.
3) Howard Zinn
Yes, the Commie who taught a generation of young people to loathe their country because we're all bad and no good gets some credit, too. Funny thing is - I missed out on this yo-yo. I only first heard of him about five years ago.
4) Declaring War on Iraq While Engaged in Afghanistan
We get attacked on 9/11 and a bunch of patriotic Americans do things like withdraw from college or volunteer right out of high school to serve in the military. And what does the Bush Administration do? Pivots entirely in another direction to settle an old family score with Iraq, all under the guise of "well, this guy has 'weapons of mass destruction' and he might give them to Bin Laden." We had people who joined the military to fight against the Taliban who went to boot camp, came out the other side, and wound up getting pulverized by a roadside bomb in a country we decided to attack almost on the whim of Donald Rumsfeld. Or we had folks go - repetitively - here then there then here then there for a decade.
5) Biden's Botched Pullout of Afghanistan
The botched pullout of something that should have been easy enough to do made it even worse. What American NOW - after the fleeing to the helicopters in Saigon, the abandoning of the American Embassy in Teheran, the choosing of a second war without ending the first in the Middle East, and the sudden "ah, what the hell, let's go home, Lloyd" pullout from Afghanistan.....what American with a functioning brain would ever volunteer for military service with our repetitive failures?
This cartoon from 2021 drives the point home better than anything I could say:
6) The Corruption of "Make America Great Again"
When Ronald Reagan coined that phrase in 1980, he was campaigning in a country that had gone through a brutal existence psychologically since the assassination of the President in 1963. Through the 60s riots, Vietnam, Watergate, stagflation, and culminating in the helplessness of the Iran hostage crisis, Reagan was NOT (as Trump has done) saying, "We're a terrible, horrible country, but I can fix all that's wrong with it." He was addressing that spirit that flared from time to time like when the US hockey team stunned the Soviet Union in the Olympics. He was NOT putting us down or saying we had been this great country but now we were terrible. Furthermore, he was saying THE AMERICAN PEOPLE with removal of some government encumbrance could do well ON THEIR OWN. He was NOT saying what Trump is using the same words to say, whether you like Reagan or not. He was campaigning as an OPTIMIST and tapping into the mythical America seen in Norman Rockwell paintings, etc. YES, he simplified. But Reagan was also a WW2 era vet, so he brought that to the table as well.
Most of our Presidential candidates, win or lose, tapped into that. Kennedy did, Nixon did, and as you go through the ads, Gerald Ford had "I'm feeling good about America," Dukakis said "the best America is yet to come", Clinton started with Reagan's phrase and then pivoted to saying (basically) "things are bad, but WE CAN make them better." Obama went with "change we can believe in" and "yes, we can." The only sort of pessimist who won, Carter, still was able to combine the spirit of both Abraham Lincoln and preacher Jonathan Edwards.
Then we get to 2016, and we have Bernie Sanders ranting about things and about how bad things are here, never mentioning that America has worked out pretty damn well for HIM. Liz Warren loved America so much, she wanted to pretend to be one of the "people who were here first." And then we have the Demagogue Don saying in the same hamberder breath that HE ALONE can make America great again and that all these other countries with brown people are conspiring to destroy what he also says is a bad country, to the point he says we're no better than Russia. RONALD REAGAN AND BILL CLINTON DID NOT USE THAT PHRASE TO EVEN IMPLY SUCH!!!
Thus, we have a Republican standard bearer who thinks America is only good when he's in office so he can avoid jail (that's the only reason he's there, folks) and the leaders of the Democrats whining about crap like "colonizing" and talking about a Jim Crow that ended long before they were even born as if it still exists. I swear, the next Democrat who opens a meeting with the words, "First, we want to admit we are holding this meeting on stolen land" needs to be mocked on every network within seconds. "Uh, unless you have a plan to give the land back, you should just shut the hell up."
I've rambled like the increasingly old geezer I am. What's funny is in some ways, I FEEL for these kids but at the same time, their 'struggles' aren't really all that different than any of us endured. As a friend of mine in Kentucky said last time we talked, "My Dad is 75, he's always been gainfully employed, and he's still terrified about what's next or if he can make it through without being forced out of his house or what's left of his earnings."
My sister-in-law, who does too much dope and not enough reading, wants to play victim with how they're being told to live in "a world that no longer exists."
I hate to break it to these folks, but they were ALIVE in 2000.
And the world of 2000 is as different from 2026 as it was from 1974, but we made it work.
And despite the shadow of Vietnam, there was another surge of patriotism in both the early 80s and the early 90s - and even early 00s.