This is true here on HN too. One such word that I’ve seen to cause comments get auto-killed is “m∗sturbation” (censored for obvious reasons), and I am sure there are others.
masturb circlejerk faggot nigger feminazi shitstain lmgtfy.com #maga
If a few "medium" actors get banned by accident, that's the price to pay for the rest of us getting to enjoy discussing tech without dealing with a toxic cesspool.
Metafilter is a forum which used to be very diverse in opinion and is now basically captured by a small vocal minority. How did they do this? The minority produced a large amount of content for the forum and was very active. 95% of that content was high quality and on topic but the remainder is biased and very opinionated. As a result of their interaction with the site they were closer to the mods, regarded more highly, given the benefit of the doubt in "bad actor" conversations.
Now today Metafilter is a dying community of territorial users who eviscerate anyone who doesn't know how to play the game. The minority won and created their little clubhouse corner of the internet. Metafilter as a forum though is a shell of its former self. There are fundraisers to keep the site alive and formerly paid mods and devs are now either retired or do it for free. Not only did it drive away old and new users but the minority also seems to have become bored without constant drama and moved on (as seen by new posts and commenting activity falling of a cliff).
I know the common refrain on HN and in general is "on a private platform there is no such thing as free speech" but be careful. Don't let blatantly toxic users run your platform but beware of users who are quick to call everything toxic.