This would use a blacklist and possibly an AI-enhanced swear detector.
If the filter detects bad stuff:
(This photoshopped image means that if something bad is detected, it can't be immediately posted, but clicking "Wait for Approval" will put it under review by a moderator.
It’d be more like PopJam filtering. (Which is awful, I’m glad PopJam shut down even tho KS had a PopJam account)
I love both this answer and your comment
That’s pretty cool. Really cool, actually.