Yeah its harder to censor people out in the open. FB and Zuck hid it - but i believe he recently said he regretted doing that.
I dont see how hiding your motivation and allowing free speech is in fact anti-free-speech.
Why do you see it as an attack? You are arguing that brazil has the right to limit free speech and that Elon should comply and censor his platform. That is what they've done in many countries, DDR for example. Do you not agree?