How does that work from a user perspective? If they were subscribed to android@lemmy.world , would the subscription transfer over to the new community without them realising, or would they need to manually subscribe?

I don’t have a problem with communities being able to move. The users should be notified and have the option to transfer too or leave. Over time, the values may diverge.

I also think the power should rest with the mods to do so. However, it would be wise for them to consult the community. For larger communities, you’ll likely never have consensus, so someone needs to be able to decide. If any instance became hostile or overrun by undesirables, moving would make sense.

I imagine the current threat from meta will be divisive and some communities values may differ from the instance they are on.