Any number of past mega-rich were probably equally nuts and out of touch and reprehensible but they just didn't let people find out. Then Twitter enabled an unfiltered mass-media broadcast of anyone's personal insanity, and certain public figures got addicted and exposed.

There will always be enough people willing to suck up to money that they'll have all the yes-men they need to rationalize it as "it's EVERYONE ELSE who's wrong!"

The watershed moment for me was when he pretended to be a top tier gamer on Path of Exile. Anyone in the know saw right through it, and honestly makes me wonder if we just spotted this behavior because it's "our turf", but actually he and people like him just operate this way in absolutely everything they do

Yeah, Putin is probably the worst billionaire. Elon might be a close second though, or maybe it's a US politician if they actually are a billionaire.