Comment by jordanb
Back then he had a PR firm working for him, getting him cameos and good press. But in 2020 he fired them deciding that his own "radically awesome" personality doesn't need any filtering.
Personally I don't think Elon is the worst billionaire, he's just the one dumb enough to not have any PR (since 2020). They're all pretty reprehensible creatures.
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!"