I agree Williams should shut up and keep his head down like any good rook. But some guys are good enough to where the rules change a bit. Williams is probably one of those guys. Doesn't mean he can do what he wants, however I don't think he's stepped in it yet with the players. At least not yet.
Some of these wideouts probably liked that previous QB, who actually couldn't play for shit. So all that stuff goes out the window when you see that new QB can play. One thing about players is if you can play you're good in that locker room. If they know you're gonna win them games they're gonna get in line. He just has to deliver.