The reason the mods are leaving is due to an issue where the instance admin would remove comments from this community for breaking the instance rule of Empathy which has the guideline of:
If your comment is designed to hurt someone, this isn’t the space for it.
How is "fuck off" anything but a comment designed to hurt someone?
Instance admins have total control over the communities on their instance. The admin can appoint themselves or anyone else as a moderator and unlock the community, so there's a chance there will be more posts. If not, that's fine too! I'm subscribed to a fair amount of communities that are no longer active. It doesn't change anything as I scroll through my subscription feed!