Lots of complaints (justified ones) about Amy Barrett, but if you Americans think she's bad, you really don't know Brazil's Supreme Court long tradition of choosing the most corrupt and inept ones; just in the last 30 years alone we had:
Fernando Collor nominating his first cousin, who was 44 and had the fastest ascent in the history of the country (from graduation to a sit in the appeals court of Labor Justice in two years, then appointed to the Superior Labor Court after 8 years- the fact Collor's father was one of the most powerful members in Congress, a man that literally killed another Senator in the Senate floor and got away with it and spent another 20 years in politics, was just a coincidence, surely).
Fernando Henrique Cardoso nominating one of this cabinet ministers (actually, the second one he did), a guy who had no problems running a private college while still having a job roughly equivalent to the solicitor-general in the US (though here it's independent from the Justice department) and continued to do so while in the Supreme Court, and while he's there he publicly attacks other politicians and judges in the press and trials, comments openly about cases he's supposed to judge on, sits on cases involving friends and relatives, and has multiple accusations of corruptions.
Lula nominating an obscure appeals judge (who only got there because of political connections in the first place) because his mother was best friends with the first lady, and the guy repaying by not only voting for his government pretty much 100% of the time, but doing things like allowing Dilma Rousseff's lawyer in a case directly related to her impeachment be allowed to testify at her impeachment trial as an expert witness and then allowing her to retain political rights despite the Constitution expressly forbidding it.
Lula again nominating of his cabinet ministers, who was 41, had flunked twice the entrance exam to be a judge, had two convictions for misuse of public funds (more precisely, being hired illegally) that were conveniently overturned after he was appointed, and has refused to recuse himself in cases involving him or other members of his government (and conveniently voting in their favor nearly all the time). He has since been accused of corruption multiple times too.
Dilma Rousseff choosing a candidate only after he promised his allies that he would vote for them in a pending corruption trial (which is a promise he didn't fulfill and already publicly confessed to have made).
Michel Temer nominated another one of his Cabinet ministers, who didn't bother recusing himself in cases involving directly or indirectly Temer, his minister or his own political allies.
But now Bolsonaro probably outdid all of them- he chose a guy who turned out to have a long history of plagiarism, as well as putting courses that last a few days as "post-graduate" or "master" degrees. And he's not even a conservative, as one would expect. He was chosen quite clearly because he promised to save him and his family for prison, and in the hearing he made quite clear he'll extend the privilege to other corrupt politicians, so naturally the senate (including politicians from the left, who have shown to be quite excited with the appointment) approved him comfortably- yes, in one day. He even has his wife working in a senator's cabinet.
In Brazil, the Supreme Court is a lot more powerful than in the US and most places, judging tens of thousands of cases every year, including cases involving crimes of members of Congress that happened during their term, as well as multiple cases involving criminal convictions from lower courts (conveniently, cases involving politicians and other powerful people tend to make their way there) so essentially presidents pick the members to save them and their allies from jail and in return they don't impeach said SC members when they go against the law. Some of them turned out to be pretty decent, but that's usually a complete accident (like the guy that lied his way in). It's probably both the biggest symptom of why Brazil can't quite go the next stage of development and one of the causes- systemic corruption is so entrenched that any progress made by society- or in lower courts- tends to be broken or mitigated at the highest levels.