You call the spade like it is. I must really read the rest of your series. In my attempt to become a bit more diplomatic, I think of the many less-than-interesting posts as mis-categorized or wrongly-tagged posts. On the same subject of shit posts and do we even need them, the system appears to be working well for some, so I have my doubts it will be altered very much, philosophical, politically speaking or practically.
There may well be robustness to the conversation, but will it be meaningful or directed to a goal to change?
I anticipate mostly self aggrandizing and self-righteous posturing. I never thought I'd say it, but I think an AI-bot is more likely to fairly decide on quality of posts than a profit-driven group of human curators aka whales. The groups whether small or large, appear to be infected by basically the same human politics and a little thing called profit. A sad indictment on the human condition if you ask me.