I don't know about you guys but I think the complexity of current AI is being given a bit too much credit here. I can totally smell when some text is fake and generic. Its all about the subtlety. And even if somebody created a bot to bump posts or cheat signature campaigns, I think we would be able to detect it. Perhaps not immediately but there would be signs at some point. Humans make mistakes. Grammar, typos, thinking errors like brain farts. You cannot really replicate those tiny human imperfections perfectly and they are what makes us what we are (yet).