As much as I dislike Twitter/X and it’s owner; their ‘crime’ is refusing to silence the political opponents of those currently in power, then further refusing to pay fines for that decision… Decisions, at least in principle, I agree with.
That said: I haven’t actually seen the content that’s at the center of this dispute; the posts of those political opponents. I’m also not very familiar with Brazils politics, so perhaps there’s context I’m missing.