When you're part of a team particularly a leadership position you should care about how what you say effects the other members and how that in turn effects the team as a whole.
Any advantage they could get from being the underdog has to be undone by the Bills just posting clips of this cocky douche talking, do any of you want to look bad playing against this #######?
The first thing he said when critiquing the game was that someone had it Aaron's highest gradest game, then a lot of drops, a few missed throws, behind the sticks, lot of drops.