So, are you saying that if you can play basketball really well or play golf really well, you needn't be a decent person? That skill in sports negates any and all character flaws?
I can see that the timing is a bit suspect, but to be honest, a lot of people knew that Patrick Reed was an unpopular guy a long time before he won the Masters. Winning the Masters just brought more attention to a topic that was long discussed.
Winning a major has a tendency to put a megaphone on whatever is droning quietly in the background. You'll notice that when Jordan Speith won, the exact same thing happened, except that in Jordan's case, it shone a light on good things.
If Patrick Reed had done a bunch of good things, the same thing would've happened to him. Forgive me if I don't have a lot of sympathy for people who behave despicably and then shine a spotlight on themselves. DiVincenzo and Reed both had two other options: 1) they could've not done the bad things they did, and 2) they could've avoided the spotlight.
Both of them made the opposite choices. They chose to behave like idiots/jerks/racists/etc. And then they chose to become famous. Choices have consequences.