no, not really. they tried to "purge" schoolteachers who were "indoctrinating" students but not even that went far. the vast majority of prestigious universities in Brazil are public and run by the federal government, so Bolsonaro tried to defund them and he keeps appointing ghoulish deans to run the universities, but besides that he hasn't been able to do much besides scattered actions.
don't get me wrong, good quality education, especially public university education, is under siege. but this isn't a recent development, it's something that liberal governments have been trying to do away with for a while, being pressured by private education conglomerates like Cogna or Yduqs. most academics aren't in danger of being arrested or harmed though, the only thing that is at risk is their jobs if the private sector succeeds in abolishing public universities.