@thomasfuchs all those quasi-religious wars about nerd stuff should have been a warning. Anyone who can get that worked up about vim vs emacs or some other completely unimportant detail is vulnerable to what you've described.
This “Elon is free to do what he wants on Twitter, and you’re free to move elsewhere” is a very american take.
Elon must comply with European laws and regulations in data protection, anti-trust, anti-discrimination, etc or the EU will seize his property to enforce fines or make Twitter unavailable for EU.