Do you have some examples of ai slop posts?
There are quite a few third party apps for Hacker News, such as Hacki (ios/android). [1]
Something like using a third party app that includes forms of spam filtering like checking when the user joined, how many posts they have, amount of 'karma' (or whatever it's called here). You could implement blocking individual users & etc etc. This app does not have that but it could be forked and modified or talk to the dev...
That might be a better solution than trying to implement all types of annoying captchas & other extremely annoying checks on HN's side.
[deleted]