49ers (Garoppolo), Rams (Goff), Saints (Brees), Colts (Rivers), Browns (Mayfield), Ravens (Jackson), Titans (Tannehill), Steelers (Roethlisberger) were/are all teams that would not crash without their starting QB. The 49ers last year had a lot more injured than just Jimmy G. You can either make up for it in the run game like Cleveland or Tennessee, or with a really good defense like Indy or LA, or both like SF, NOLA and Baltimore. All of these teams were in the playoffs last year, save SF who were missing half their roster most of the season.
In fact, a guy like Rodgers can be a detriment because really good QBs take up a massive amount of the cap, which is something I hope doesn't end up hurting the Bills too much. Brady took under market value money for years which is a big reason why NE had one of the premier dynasties in the history of the NFL.
Also, there is no way in hell the Packers are getting 3 first rounders and a guy who is looking like a star WR for Rodgers. He's old and makes a lot of money.