The whole "deplatform" thing that should have been seen for the miserable idea that it always was *only* got good references when biologists couldn't take with creationists anymore, since any effort to debate or talk to them was always absorved by the other side as a "win" ("See? They're talking with us which means there's a controversy"). So to counter this regurgitating tactic by some creationists, biologists thought that "deplatforming", denying any kind of conversation and so on should be the correct answer. "We're not going to lend our credibility to these buffoons", they said.
And everyone with a brain understood that position. What very few people understood was how this idea was poisonous and anti-intellectual in itself, it based on an anti-enlightenment view of the world, one which just suspects people are dumb and should not be trusted into reaching truths through reason and debate, but rather should be told what to believe by those who are obviously in the right. But few people cared, because the target was so obviously wrong on their positions (and they did try hard to dismantle actual biological education).
Problem is how hard and how ubiquituous this idea has become, this one of "deplatforming" anyone who disagrees with the "obvious truth", which is, of course, always with a "liberal bias" (Colbert, 2005). You disagree with climate change even if just in this one little detail? You're a denier and should be deplatformed. It's about the future of the world, you see, nothing personal. You disagree with feminism? You're a sexist and should be deplatformed. It's about equality. You disagree with intersectionality? Let's ban and shout you down. You are a student that disagrees with the black lives matter movement? What are you, a KKK member? We'll have the university administration persecute your ass down until you're out. And then it eats itself, when we see trans people being deplatformed because they were invited by a jewish club (worrying about anti-semitism is so 20th century, guys), when we see Maryan Namazie being deplatformed because she had one wrong particular idea within the ideology she so shares 99% with. It eats itself while burning the wider forum, the wider "marketplace of ideas". Enlightenment itself.
It's a tragedy, but what to expect? Bad ideas are not suddenly good ones because they had good intentions behind them. This devilish deal we had with deplatforming as a tool to crackdown "bad ideas" is turning any debate into either an intellectual masturbatory exercise between those who think alike (and in progressive manners, but I can totally find right wing analogues), or into a cruel witch hunt against that guy who just said something deeply "problematic", "disturbing" and "triggering".
Life is not a safe space where we have to deplatform (to where, Mars?) those who disagree with us. And my primary reason for this is that I do not trust *anyone* to do the job of deciding who is to be deplatformed, because as far as I know, he's an ape just like me, with his own agenda and errors. Deplatforming should be deplatformed. For the sake of us all.