Elon Musk isn't responsible for the success of his companies - they succeed
in spite of him, because of the quality of the people who do the actual work, and their ability to manage him and keep him from doing to Tesla and SpaceX what he's doing to Twitter.
Unfortunately, modern American capitalism is obsessed with hero worship of CEOs and the myth of Elon Musk as a real life Tony Stark is just too compelling for people to shake off.