This is my take also. This video was very helpful in breaking down what happened.
This team was getting 2 deep coverages, taking away the big play, and Brady and the FO made a strategy for that both with scheme and personnel, running the ball and going underneath. Now teams have tape on the Bills offense and came up with a new strategy, with one high and man coverage, especially since our less-than-stellar WR core can’t beat man.
This is the chess game that goes on every NFL season, where teams make game plans against other teams once they have tape. I’m glad this is happening now, because I am certain this team will just get better from this, finding ways to counter the strategy the Ravens and Texans used.
This happens to even team, and the best ones learn and find ways to adjust.