There is this narrative I heard from a Brazilian near me that the Supreme Court in Brazil is political and rotten to the core.
The Supreme Court in Brazil can be as rotten of political as it wants, to make a plan to assassinate political rivals is just completely unacceptable.
And before someone tries to defend the bolsonaros by saying they were not involved in this, don't use a defense that they themselves did not use. The defense that Flávio Bolsonaro said about the incident was "thinking of killing someone is not a crime".