Doesn't matter even a little what was on the shirt. He knew what would happen if he did it. His team was rolling when he did it and threatened to end the game early. He went ahead anyway and hurt the team proving once and for all that it is all about him and not the team.
He can run a good route, but chokes on the big ones and acts like a child repeatedly. My hope is the Bills can get a couple good FA WR's and not have to sign "Me First", but I doubt that's possible. Particularly with Buddy "build through the draft" Nix.