I don't think people are being especially salty. Consider that he made a game that has resonance to tons of people, especially kids, which gained him insane wealth. Many people innovate in lots of spaces and aren't rewarded like he was. That stuff is never "fair" in the grand scheme of things.
Of course, good on him for succeeding and enjoying life.
That said, I think some of the disillusionment comes from people seeing a seemingly humble guy just turn into a big joke. He can live his life however he wants. It's my feeling that that amount of wealth enables him to do a lot of good. Maybe he will; maybe he won't. Of course he should enjoy his success, but christ, take a modesty pill. Having some absurdly gluttonous house and being a starfucker just makes me think less of him.
Enjoy your success, of course, but do it with some level of class.