What's happening is clear: Elon doesn't like Lula, the Brazilian president. Lula is left wing: his predecessor was a Trump-esque idiot. I'd guess many of Lula's actual policies harm the Musk's material interests in some way, or are just things he doesn't like. It might literally just be that Musk has heard Lula is left wing and therefore wants to make life as hard as possible.
Judge Moraes has had his share of run-ins with Lula, and can hardly be described as a stooge for the Left. What he has been doing is go after Brazil's version of the Jan 6th insurrectionists, whom Musk is congenial to along with other far-right causes. As Germany showed, if you don't go after thugs when they are still in their inept beer-hall putsch phase, it is too late afterwards.
No, the judge's very first action after getting censorship super powers was to censor "fake news" about the official that gave him those powers, which later turned to be "true news".
Thats where we are now. You also couldn't refrain from calling a political oponent "Trump-esque idiot". Imagine what you would do to them if you had enough money to actually go out for a fight?