If Kiwifarms users can't see that what they are doing already is unethical, why should anyone believe that they truly think these other illegal actions are wrong? They just know not to talk about it out loud because then you will actually get in trouble with the law.
The only reason the site has been able to get away with it for so long is because they are targeting vulnerable people who are least well equipped to legally defend themselves.
Not sure how you think this makes it ethical.
I'd say it's evidence of conspiring to delete evidence before victims and law enforcement can act, particularly if the threads are completely deleted, as opposed to being locked and moved to a mod-only area so the posts are preserved for law enforcement action.
Are there any automated filters that detect personal information, filters that are trivial to employ?
Are the users who post doxxing/violence threads banned?
What is the purpose of the forum in the first place? Answer: to harass and doxx trans people.
I wonder how [redacted] would feel if people knew he was defending a site that exists solely to harass trans people.
It's pretty shocking that you'd have done this in a comment right after asking whether users who post doxxing threads are banned. The answer on HN, btw, is yes—although if an account has a lot of history on the site, as yours does, we tend not to ban on first offence.
Please see https://news.ycombinator.com/item?id=32729939 for more about this.