Yeah I think a migration tool would be very helpful. I basically just signed up for the first instance that looked good without doing much research.

They could also just use a whitelist of users who are allowed to comment/post on there. I have suggested as much but we will see how they respond. I might try and contact a mod over there if that’s possible.

Edit: I’ve been told by another user that this isn’t currently supported. I think it would be a good feature to add to lemmy.