To me, its the sum of all the things he's done that makes me question his decision making skills. I know plenty of Aggies that wish he would tone it down a bit. The casino is just another example, why bring this kind of attention to yourself.
Fake id/drinking early on, court side seats to an NBA game, Rolex watch photos, casino photos...and these are just the things that are public.
He's a bull in the china shop, eventually something is gonna break...