You may be equating decriminalization of possession with legalization of unregulated sales. From the article you linked:
"Portugal
decriminalized the use of all drugs in 2001. Weed, cocaine, heroin, you name it -- Portugal decided to treat possession and use of small quantities of these drugs as a public health issue, not a criminal one.
The drugs were still illegal, of course. But now getting caught with them meant a small fine and maybe a referral to a treatment program -- not jail time and a criminal record."
Again from that same article: "Drug use and drug deaths are complicated phenomena. They have many underlying causes. Portugal's low death rate can't be attributable solely to decriminalization. As Dr. Joao Goulao, the architect of the country's decriminalization policy,
has said, "it's very difficult to identify a causal link between decriminalization by itself and the positive tendencies we have seen.""
Portugal didn't just decriminalize drug possession. It also spent a ton on anti-use campaigns and education. That is more likely the source of the positive effects in Portugal
I do not object to "decriminalizing" the penalty for drug possession (as distinct perhaps from drug trafficking), but your point that any drugs should be available at the grocery store is what I object to. And I doubt there is much data about that to support your position. If there is any data about the effects of deregulating and selling heroine on Walmart shelves, let me know.
Maybe Sam's Club will offer a family pack complete with tourniquets and needles! And I can't wait for the Black Friday slogans: "For the holidays, give your loved one's the thing they crave the most!" and "Fentynal for your Festival!." Then there will introduce Coke Original: "We put the coke back in cola!"