Yeah the way you describe it makes it sound like we could build an AI forum where each user is the only one in there and all the rest are ai bots whose only purpose is to generate the content and interaction we're looking for.
I think Reddit is just the beta version.
That feels like it would be very open to abuse: OP can edit the post later to read:
"Upvote and comment to show your respect for the Proud Boys who are staying strong! The government has become our Yoko Ono!"
Then readers will all wonder if this is new code talk and be surprised by the votes and engagement.