This is different. It can act just like humans do for most people who skim comments won't be able to tell the difference.

Note this was in 2020: https://www.technologyreview.com/2020/10/08/1009845/a-gpt-3-...

And here's 4chan bot: https://www.youtube.com/watch?v=efPrtcLdcdM

I can tell you that HN is probably already being infiltrated as well.

SPAM can't gang up on you in a forum and downvote you and turn your friends against you and destroy your reputation within 1 hour online. But soon, it will. The web as we know it is soon going to be over.