Remember when the Tampa 2 got ran thru for a few years?
Yup. Nobody wanted to run that vs Brady, Manning, Brees, etc. Gronk, Clark, Edelman, Stokley, Welker, etc. used to kill those defenses while Harrison, Wayne, Moss, Owens, Hines Ward, etc. would give the CB's and occupy safety help over the top exposing everything undernearth.
Then they started throwing more exotic blitzes, match zone, etc. until we got Cover 3 which destroyed Manning in the Super Bowl via the Seahawks. Then Mahomes and the Chiefs destroyed teams who were trying to do that. Cover 1 was used by the Patriots a lot as well, but that's because they had cats like Ty Law who can play man straight up which made those Patriots blitzes go crazier. Last year Chiefs ran a lot of Cover 1 as well.
People acting like this vanilla Cover 2 will sustain and kill passing numbers for a decade or something. It'll get hard countered by a bad matchup.
In fact, it's already being countered by teams running the ball more and scoring on the ground
All of a sudden, now you're not supposed to take what the defenses give you? QB's should be forcing passes now?