I can see Social Media CEO saying "well, I believe in free expression and I would otherwise want to allow this message, but I'm worried what the government will do to me if I do allow it. So instead I will block it."
When a platform blocks some content, some call it "censorship", while others say "hey, it's a private company and they can block what they want to. It's called 'moderation'" - but this may in fact not be something the platform wants to block - it's indirect government censorship.
I wonder how Elon will handle this. Will he be cowed by the government into censoring content they don't like? Or will he ignore them and take his chances?