Unlimited swarms of Bots can already make "helpful and constructive comments" that are upvoted by other people, thanks to GPT-3. 99% of comment interactions are passive, not an interactive Turing test. And the bots can be trained to never cuss or pick fights with people. Mission was fucking accomplished: https://xkcd.com/810/
You won't see it coming, but the bot accounts will start to outnumber people online until 10 years from now humans represent a vanishingly small amount of content and "social capital". Just like on wall street, the bots have replaced human traders. It happens gradually.
And eventually, they'll control the money online, too, for various tasks. You'll be working for a DAO maybe, but it'll be some menial job -- the way rich people hired peasants throughout history to do menial works. Until those are replaced, too, in a race to the bottom.
That is what humanity is constructing for itself. Because AI innovation cannot be stopped.