I wonder if the issue is that most people are just shitty but society acts as a check. When you're above societies rules you can act and do anything you want.
This makes them go to much greater lengths to protect their empires than most of us would, if plunked into such a position.
I think the power and fame has also changed Musk quite a lot, and perhaps something about his lifestyle and substance consumption has changed, because he is acting different than he had even three or four years ago... which was still well into the era of him being a billionaire.
Musk was never some wonderful person that should have been looked up to for his own merit. But I generally don't pick cars based on how much we like or dislike their CEO, and I suspect that most others don't either.