You propose a dangerous thing.
Once there was an article deleted on LW. Since that happened, it is repeatedly used as an example how censored, intolerant, and cultish LW is. Can you imagine a reaction to banning a user account (if that is what you suggest)? Cthulhu fhtagn! If this happens, what will come next: captcha in LW wiki?
Can you imagine a reaction to banning a user account (if that is what you suggest)? Cthulhu fhtagn!
Wait, what? Forums ban trolls all the time. It becomes necessary when you get big enough and popular enough to attract significant troll populations. It's hardly extreme and cultish, or even unusual.
If it's worth saying, but not worth its own post, even in Discussion, it goes here.