If you're talking about Elon, he does in fact have pretty deep technical knowledge. Both from reports of his employees and just watching technical interviews with him.
I get the hate about him, but it's reached the point where people just make stuff up and it gets swept up into "truth" just because it feels good.
Mmm ok it might be true that he has technical knowledge, I'll give him the benefit of the doubt there. But thing is, some things he does really suck big time, such as claiming he's the founder of Tesla (merit stealing smell right there) or maskerading their driving assistance system as FSD, when it's well known that his system is the worst in the market (probably will stay like that until they add Lidar sensors).
I get the hate about him, but it's reached the point where people just make stuff up and it gets swept up into "truth" just because it feels good.