Met a dude like this at an after party a while back.
As soon as me and my friends came there this random dude had something out for me, never met him before, and I couldn't handle how much he was staring at me so I sat down and started talking to him. I'm a very unagressive person and shy away from even heated discussions, just wanted to see what the deal was and see if just talking would help the mood soften. Almost immediately he brings up the, then very current, thing about the EU voting about banning the words sausage, burger, filé etc. for non-meat products and he's fully on the side of that being a good thing. I don't agree but also never go into full on debate mode so I try to talk with him in an "interested about your views" way, ask about his experiences around it etc.
And I learn real quick that he's the kind of person who tries to find every single clumsy word choice, small hole in an argument and then goes on a completely uncalled for rant and personal attack through that. But I've learned to just continue doing what I do, I want to discuss and talk and not act like I'm superior and go for personal attacks. Of course he can't stand someone not getting angry or trying to do the same things back so after a bit he whips out his phone and says "Ok, let's as ChatGPT about these things" and I have never felt so much like bursting out in demeaning laughter as I did then. He sits there and literally just reads the answers he's been given from the obviously very skewed towards his view questions he's written. I just look at him and let him continue for a bit then stood him and say that I'm very much not ok with this, if you're gonna start a debate over something you should do that based on your knowledge and experiences, at the very most bring up a Wikipedia article but not a fucming AI chat bot. His answer is literally "I'm a junior lab assistant and have tech skills, I know that these answers are 100% correct and based on all available information online".
I couldn't even respond to that so I just say I need to take a leak and ask where the toilets are and actually went and joined some other random people, who were very nice to talk to and even discuss and debate things with.
After about an hour and a half some of them needed to go home so we go into the room where he was sitting and he's having the same fucking debate with two other dudes who are sitting there just as bewildered and annoyed as I was, I sit down next to them and join another conversation and the AI bot dude stands up, looks at us 3 he talked with like he's disgusted by our existence and just leaves.
So fucking weird, I actually feel sorry for him more than I dislike him. I hope he manages to climb out of that hole.

Sorry for the wall of text and certainly some spelling errors, gonna have to come back and format and correct stuff later tonight.