This was almost entirely an astroturfed campaign, which very effectively worked to whip people up into believing that they were being censored.
Whenever it came up in the last few years in online conversations, I would ask "OK, so what are you being censored from saying?" Dozens, maybe a hundred times, of me asking that question, and it was nearly always crickets in response.
What is the evidence of "the left" censoring academia? Whenever I dig into that, it's sloppy science, fringe theories, or straight up crackpots who couldn't get published in a journal, who then found popularity on youtube and podcasts doing the "I am being censored by Big Science" grift.
If anyone would care to educate me on this, with evidence, I am here for it.