The short answer is... nothing! But you have brought up a very thought provoking question.
IDK if you remember TW in his early years, but he grew up idolizing MJ. He wanted to be like Mike (or greater than Mike) even down to his fist pump. He was surprised, and probably hurt, when some fans criticized his on course behavior. I remember him saying "Nobody criticizes MJ when he does it!"
Ah, but golf was not basketball or football. Those of us that grew up watching the "gentleman's game" of Nicklaus (who I never really liked either), Palmer, and Trevino (my favorite) had never seen behavior like his on the golf course, so some of us thought it was disrespectful showmanship. I remember taking an immediate dislike to TW at that point. Looking back, his behavior was not necessarily "wrong", it was just different, something we had never seen before in golf. And he has attracted a lot of noisy (sometimes obnoxious) fans, whose behavior doesn't belong on the golf course either IMO.
Ironically, he has grown up and now behaves like a "gentleman" on the golf course, like we saw at Augusta. I think he knows that he is a role model for the younger golfers (and has spent a lot of his time mentoring the young pros). He is also trying hard to repair his image with the public after his affairs & messy divorce.
Nobody can question the fact that he was the best golfer on Sunday. Every aspect of his game was top notch, and he deserved to win.
But, old likes/dislikes die hard. I would rather root for Spieth (if he can ever get his s**t together again), DJ, Fowler, and of course, Phil.