This is IMO a risk for many individual owned fediverse instance. Someone has a domain, at a point other admin take over, and the domain owner doesn’t renew no matter whether they forget because real life happens or due to some Drama.
Very few instances have a clear legal organizational (like a non profit club) running, which is more flexible when founders step out
Note that, at least for people using mbins, _ upvotes are public_ and while downvotes are hidden (Which is weird IMO), instance admins, and people who know how to use lemmy’s software API, can access them.