From what I understand, Clubsall doesn’t allow federation to go both ways and accept that users outside of its domain can participate freely in their communities.
Can’t have it both ways of leeching the posts from other large instances while simultaneously making it an exclusive club where only local users can participate, it goes contrary to the social contract and spirit of the Fediverse.
It’s not a setting that available to admins out of the box, and someone tweaking their instance not to process the request for deletion from the ActivityPub protocol can’t really be detected from the outside, and sure won’t be published.
Once it’s out there in the fediverse, you can assume it’s there to stay.