Don't believe all the bullshit about what he has "created". He was fired, but got to keep is equity. Peter Thiel was the PayPal founder.
Tesla was founded by Martin Eberhard and Marc Tarpenning in 2008.
For a long while, Elon was very successful and very popular. Like most CEOs, he claimed all the work at Tesla and SpaceX is of his own creation. And sure, I am sure he was responsible for a lot of the financial success of those two companies. He sets goals for a company and the people in those companies try to achieve those goals. In Elon's case, he sets many goals and many projections that tend to fall flat. That doesn't matter if you are successful in getting more investors and boost stock prices.
However, once he started running his mouth on Twitter, it became very clear that his charisma couldn't keep up.
Also, the financial sector is nothing like it was when PayPal was founded. There weren't regulations in place that could apply directly to that kind of company yet. While he may know more about the financial sector simply because he deals with many more zeros on a daily basis, his "revolutionary" description of how he wants to transform X shows that he is way out of touch.
Quite simply, Elon has proven that he cannot be trusted, especially when it comes to reporting anything financial. For example, him and the "CEO" of X are currently saying that advertisers are returning at record rates. This is getting proven wrong, or being shown as misleading at best.