@J12t the thinking is less "consistent reply trees" and more "consistent moderated conversations". whereas the reply tree is an implicit structure that needs no approval to be part of, having an actual reified collection with an explicit owner/moderator allows us to authoritatively decide which certain posts are allowed into the conversation or not. anyone can reply to anything, but not anyone can Add into a Collection.
@trwnh imho these finer points are really hard for casual users to understand. And nobody wants to think hard when chatting casually. Avoid if possible I would recommend…