Actually, Bolsonaro is a fraud. He only acts in the self-interest of himself and his immediate family members. As he’s being threatened by the dictator, with some speculation that he could be arrested at any time, he’s keeping silent during this whole X blocking incident so he doesn’t suffer retaliation from the dictator.
As for Musk, I know that, like every businessman, he has his financial interests. I surely would if I were one, and I would not blame anyone for doing the same, as nobody gets rich spending money unwisely. However, I can recognize that his passion for free speech is genuine; otherwise, he wouldn’t have bought Twitter for $44 billion. Under the most reasonable analysis, this was a bad deal in terms of return on investment. Maybe it’ll bear fruit in the long term, but it’s a big, nebulous maybe. So as he decided to buy it anyway, he surely did so on principle, not for money.