I don't think there's a non-moderated scenario that puts the cat back in the bag. Even before chatbots, there were massive influence operations in favor of one strongman's favorite strongmen. Online manipulation is now an industrial science with decades under its belt.

There are so many voices now that someone or something is moderating them no matter what (in most cases just by ordering them.) The challenge now is meta-moderation.

There are still few enough moderators that one or two "good guys" could fill the shoes of the meta-moderator, e.g. EFF could tell you that HN is good and Xitter is bad.