this has nothing to do with it though. it's not that most normal people like him—it's just, most normal people don't spend any portion of their daily lives ruminating on how much they hate someone they've never met, who is much wealthier and more successful than themselves, to the point of repeatedly expressing said hate on the Internet... well, at least, since about 2020 or so.
Almost everyone I encounter dislikes Elon Musk. I'm not even talking about tech people, although I do live in Silicon Valley and that might bias things. My hair dresser, my wife's make-up artist friend and stay-at-home moms. My kids' teachers.
For better or worse, even random Joe Q. Public knows who the richest man in the world is, and has some opinion on him. Everything he does is scrutinized by the media and put into some political or moral framework. Just like Bill Gates in the '90's, he's inescapable.
But unlike Bill Gates and other prior holders of the richest-man title, Musk eschews any personal PR department and instead broadcasts to the world unfiltered takes. And by and large, people don't like what they see.