Hm.
What if a social media space where all comments-sections were, structurally, follower-only,
and in particular boosting carried neither permission to comment nor a list of known responses, that list only lived in a canonical location of the OP, and GET/POST the comments required view-permissions (I think there's a cryptographic way of encoding this, I'll defer to Willow Protocol for all that work this is just a thoughts) on the account?