Sean McDermott took over as coach in 2017, Beane took over as GM. Instantly they won 9 games and went to the playoffs for the first time in 18 years. Tyrod Taylor was the QB, Josh Allen was nowhere to be found.
It generally takes 2-3 seasons for a new regime to fix cap issues and get all their players in place... to rebuild. Coaching and GM alone instantly made them better but it wasn’t simply the addition of Allen that made them contenders… he sucked for his first two seasons and they still made the playoffs. They also added Tremaine Edmunds, Poyer, Tredavious White, Diggs etc… exceptional players along with all the quality depth players who improved all three phases.
You only see the QB, it wasn’t one player, it was all the improvements.
2022 was not a normal season, BB made a massive error with his coaching staff. It was a vain idiotic mistake. They fixed that mistake. We’ll see what happens if they have another great offseason personnel wise. Coaching matters, one magic player doesn’t control an entire teams destiny.