The more I think about it the less it makes sense that instance admins also have the role of curating an instance blocklist ("defederations") for all their users.
They clearly have the role of moderating local users, as they are the ones that get to suspend or ban users.
It's also nice to delegate the curation of a blocklist to someone, but why to the admin? And why without opt-outs?
Feels like tooling to subscribe to blocklists would put users more in control.