Left-leaning governments specially in former colonies generally means more cooperation with Global South countries. While right wing ones lead to the opposite as we can see in Argentina right now with Milei.
Twitter is completely infested with nazis and far-right misinformation campaigns; even more so since Elon bought it. Banning it doesn’t do much about the Brazilian right wing, but it does separate Brazilians from the american right wing somewhat, since Brazil makes/made up a third of Twitter users.