As dudalb says, Tony Stark is fictional, but I suspect enough people have told Musk that he is the real life version that he's starting to believe that he's not just a genius but uniquely talented in anything he puts his mind to.
Yes this is the biggest part of the problem, I think.
At Tesla and SpaceX, Musk has completely surrounded himself with yes-men who are there to constantly validate him and remind him at all times that he is the Main Character of Reality. It is not strictly untrue to suggest that they're doing this as an informal but nevertheless quite real staying-employed requirement; but that's not to say that those people actually need the threat of being fired hanging over their heads to motivate them - they are truly enamored with Elon Musk, in a way that is really difficult to accurately describe without sounding like I'm trying to insult them.
They genuinely believe that Elon Musk is a genius the like of which humanity has never seen. They believe that his ideas are always the best ideas, and that if for any reason they
appear not to be, it is only because something or someone else did something wrong. And this adoration isn't just a C-suite thing; anecdotally, I have had a discussion with an injured former line-worker at the Fremont Tesla factory who had leapt at the chance to get hired by Tesla because of his love for Musk, but was forced to quit due to his injury. Even so, he remains completely enraptured with Musk - to the point that, even though he himself pointed out that lax safety standards and abusive demands on the part of factory managers that overworked and overstressed the line-employees directly led to his own injury, he absolves Musk of responsibility and will not entertain the idea that the factory managers' demands were just relayed Elon Musk demands.
Musk very publicly moved to recreate this sort of corporate environment on Twitter; but where he slipped up was neglecting to account for the fact that Twitter is a public communications platform and most of its user base
doesn't deify him and a not-insubstantial percentage actively dislike him. He thought all he had to do was clean out a few troublemaker accounts and "eliminate bots", which he perceives as comprising most if not all of his active haters on the site, and then Twitter users would rally around and celebrate him the same way that the workers at his factories do.
A large part of the disconnect comes from the fact that while Musk fans obsessively follow and praise him and laugh at his jokes on social media, prior to his acquisition of Twitter his haters, except for a few small bands, largely avoided him and never responded to the things he posted, giving him a highly inaccurate picture of just how many anti-fans he actually has.
