I quite agree with you that moderation is hardly a machine job, and not saying it is the perfect solution. It sure as it's drawback. I am just arguing that the benefits outweigh them. I would prefer to be in a world where there are not needed, be as of the world today, I admit I prefer having this filter rather than not having it, mostly because of the systemic effects I explained.
I agree that the relevance of he content of the filter can be discussed too, and that banning some words can make it difficult to discuss certain topics. But I think some words are almost always meant to harm, and can be easily replace by more positive or neutral term.
As a direct example : I can talk in this post about homosexuality, and I can event paraphrase to talk about the way some f word is used as a slur for it and how I think allowing it here isn't a good idea in my opinion. See, I can talk about it, be respectful about it. I just prevent to call you a [insert here whatever banned slur] pretending to use my free speech.
I guess there is a difference between accepting discussions around a subject with people you disagree with, and accepting someone creating an account specifically designed and named with only one goal : bad faith and low effort posts (yes this is what such a username clearly seems to announce to me).
I spend much time having great discussions with people both online and afk about vaccines, people who are both pro or anti, and it is sincerely interesting. But seeing such a username is as stupid as seeing someone named "vaccineguaranteeyoursurvival". Those username are themselves clearly false statement that are meant to create unusefull discussions.
Hope this ban isn't getting canceled.