I certainly gave him credit for longer than I should have. I'd say it stemmed mostly from a belief that scientific and technological progress will help solve a lot of large scale problems, and he seemed to be aligned with and guiding some of that progress.
Which ideas? Like electric cars are a pretty legitimately good alternative to ICE cars. Ofc investing into public transit would be better, but that's a social problem, not a tech one. Reusable rocketry seems pretty legit. Starlink does seems like it'll be a massively taxpayer subsidized money black hole, though.
I'd say most of the issues I have with the Elon are his social policies (anti-worker) and views.
I would've suggested a few years ago that people simply didn't know the monster behind his public facade, but that mask has long since broken.
At this point I can only guess it's a mix of right-wing facists and the "disgraced billionaires" of the world worshipping him in the hopes that they can "one day" be like him.
He still wields incredible power, it's rough just to think about it for me. I honestly find it a lot harder to think about Musk than Trump, reason being that Musk actually has some smart people working under him.