And I suppose The Prince by Machiavelli…

Seriously… I think this is a ridiculous interpretation of the actions by Musk. 
To me it VERY OBVIOUS that he identifies freedom of speech as a foundational part of a thriving civilisation. And it is also obvious that he understands that a civilisation is foundational for the ambitions to make humanity multiplanetary. And the latter is his long time goal. 
Your interpretation seems more like some kind of nihilism, default cynisism.