That’s unfortunate. I switched to kbin from Reddit and really liked the community feel. That’s what sold me on the fediverse. But seeing as there wasn’t SSO across from kbin to lemmy, I had a second account for the latter as there was a lot more activity on lemmy and I used kbin less and less as the site spent more time broken.
I agree there should be some more formal way of letting community operators know their instance is going away. However, the fediverse not having any way of enforcing any such rule, means we’re still looking at individual whim determining whether or not an instance will simply disappear overnight or give users time to move.