Musk is free to do what he wants with his platform, but let’s remember Facebook, x, TikTok, instagram, etc are all free to censor their content as they see fit. They are under no obligation to be a free for all. While they can do that like X, not all choose to. That’s also respecting their own Constitutional rights as an organization. Freedom of speech means controlling the narrative of your platform as much as you like, as you are not stopping those people you kick off from forming their own platform as happened with Gab, Truth, etc.