Aside from the symbolic action (that can only be seen by looking for what isn’t there), what does this accomplish? (And yes, I do note that the symbolic action is important in of itself).
Alternatively, if I wanted to follow @[email protected] in Lemmy (universeodon is a Mastodon instance), how can I get him in my timeline?
As far as I can tell, removing a mastodon instance (in this case social.bbc) from from linked instances in Lemmy has absolutely no impact on what someone will see in subscribed, local, or federated timelines.