Many mastodon instances shut down. There’s always a risk that at some point the donations are not enough to sustain an instance. It could be very problematic if mods lose their communities when an instance shutdown.
Perhaps what we need is a backup code or some kind of exportable file with all our data (subbed communities, interactions, yadda yadda) which we can port over to a new instance if necessary.
Yeah, especially with Lemmy which is a lot more permanent than Mastodon is. You can screenshot your old toots but you can’t screenshot a userbase. There should be a way to migrate a community to another instance while keeping the subscriptions.