I agree it doesn't really matter that these accounts are banned. The only thing worth pointing out is literally this exact account was something Elon pointed to as an account he would protect on Twitter as an example of his support of free speech.
He can ban away, but he's just proving his free speech stance is meaningless. He'll just ban whatever he doesn't like regardless of if it's legal or not. Which is fine, but don't hold him up as some defender of free speech.