For sake of new users we use posts like this to redirect people to more active communities, sticky the post and lock to mods-only: https://threadiverse.link/sopuli.xyz/post/31536406

Edit to add: its incase something happens in the future and we want to reopen the community with new mods. Instances come and go and there's some fediverse bickering every once in awhile so the communities split. Then there's a ready community.

Well, if someone doesn't step up then I'll vote for RO because your post is the first I've come across this community, and I'd like to be able to go through the existing posts at some point. I've just subscribed to remind myself of it.

If reclaiming server space is a priority, then of course do what must be done.