First, it needs to be said that Musk and Buterin are quite similar in certain regards. Both are very active on Twitter. Both are very smart and love talking about complex concepts that will make your head spin. Both love silly jokes, and they regularly drive their users/customers/shareholders up the wall. In 2017, Buterin (who insists he’s just one of many cogs inside Ethereum but is largely seen as the project’s leader) said he will leave (Ethereum) if its community doesn’t get its act together. Musk angered the SEC to the point that he almost lost his CEO position at Tesla.