Correct me if I’m wrong but the continued use of the system of bowls as national championships was mostly used because it took forever to get ND and MSU to even agree to play in the bowls in the first place.
THE ONLY BOWLS THAT EVER MATTERED FOR THE NATIONAL CHAMPIONSHIP
(note: the year cited is the SEASON, meaning the 1968 season would refer to the 1/1/69 games)
1968 - Rose Bowl (1 Ohio St vs 2 USC)
1969 - Cotton Bowl (but 3 others would have mattered if Texas lost)
1970 - Cotton, Rose, Orange (#3 Nebraska's win made them AP champs when UT and Ohio St lost)
1971 - Orange Bowl (1 Nebraska vs 2 Alabama)
1972 - Rose (1 USC vs 3 Ohio St)
1973 - Sugar (1 Alabama vs 3 Notre Dame; #2 Oklahoma ineligible and had a tie)
1974 - Orange (1 Alabama vs 9 Notre Dame; Tide wins, a title; Tide lost? Probation OU wins it)
1975 - Rose, Orange
1976 - Sugar, Rose (2 vs 3 but only mattered if 1 Pitt lost Sugar)
1977 - Cotton, Orange, Sugar, Rose (the latter if events broke a certain way)
1978 - Sugar, Rose, Orange
1979 - Sugar, Rose, Orange
1980 - Sugar, Orange, Gator (last 2 only if UGA lost Sugar to N Dame)
1981 - Cotton, Sugar, Orange
1982 - Sugar (1 UGA vs 2 Penn St)
1983** - Cotton, Orange, Sugar, Rose
1984 - Holiday (BYU vs 6-5 Michigan)
1985 - Orange, Sugar if Miami won and OU won Orange
1986 - Fiesta Bowl (first-ever ensured national title game before it was played)
1987 - Orange (1 vs 2)
1988 - Fiesta (1 N Dame vs 3 unbeaten WVA)
1989 - Orange, Sugar (#3 Michigan was not going to be champ if Irish beat CU anyway so no Rose)
1990 - Citrus, Orange, Cotton (if Tech lost Citrus)
1991 - Orange, Rose
1992 - Sugar (1 Miami vs 2 Alabama - first Bowl Coalition ordered matchup)
1993 - Orange
1994 - Orange, Rose if the pollsters weren't impressed by Nebraska
1995 - Fiesta (1st Bowl Alliance ordered matchup)
1996 - Rose, Sugar (if Arizona St lost Rose)
1997 - Rose, Orange
Notice that you usually have NO MORE THAN TWO bowl games that had any full-blown effect on the national championship. In 11 of those 30 years, you had a de facto national championship game in one bowl, either 1 vs 2 OR 1 vs 3 with 2 elsewhere but 3 is undefeated. In a 12th, Texas played the early game and ended the speculation.
In nine other seasons, you had MAXIMUM two bowl games that mattered - and sometimes one only mattered if the team ranked #1 lost.
You had one season where the national champion played on December 21 (1984), but they were able to present the bowls as "the games that might decide the national championship."
When people are talking about "when bowl games mattered" in reference to the national title, there are only TWO time periods they can even be talking about:
1) 1977-83 (excluding 1982)
2) 1990
Now that doesn't mean the bowls were not PERCEIVED as important, but gee.....
1975 - 11 bowl games
1996 - 18 bowl games
2000 - 25 bowl games
2007 - 32 bowl games
2012 - 35 bowl games
2017 - 40 bowl games
2022 - 42 bowl games
In a 26-year span, we added 25 bowl games...and if you eliminate one year for Covid, we added an AVERAGE of one per year.