Re: Free speech is fine when he's the one saying something inane and stupid.
Musk is a typical (self-proclaimed) "Libertarian" in that- when push comes to shove- it's obvious that the only "liberty" and "free speech" he cares about is his own and anything he agrees with.
Peter Thiel is the epitome of this- a "Libertarian" who cares nothing about democracy or anyone else's (i.e. the non-"elite's") right to choose and could be described variously as a fascist or a neo-feudalist, i.e. someone who is happy for- and indeed wants- others to be oppressed to stop them getting in the way of doing what *he* wants.
(Oh, and notice how Musk- whose position is that it's more important to spread mankind to other worlds than "waste" time solving poverty on earth- is someone who was born into privilege and the elite and has never- and never likely will- suffer poverty himself. No wonder he can safely indulge his right-wing sci-fi ideology.)