So maybe it isn't really that big of a deal?
No, I did not do that.
I do not want to discuss if "groups" is a "big deal" or not.
I am interested in the question if "groups" in distributed, federated systems is a solved problem or not.
One of the creators had a conversation with kaniini, one of the pleroma devs, about this: https://social.coop/@datatitian/102893246730611249
So maybe it isn't really that big of a deal?