I'm pretty sure the last two llm_nerd's comments were AI generated.

What I am not sure about is if it was just laziness or a subtle prank showing how AI can be used to manipulate users to more interaction in a Facebook way.

I don't think it's (all) AI generated. But they seem to be weirdly determined to gaslight me about my own opinions on their comments

Thinking way too deeply into it. Maybe that's the troll. "Look how easily manipulated people are. I don't even need AI to do it!"