start establishing backups so they don't exist solely at the whim of reddit.

This is the really essential point that I think bares repeating. Yes, these communities fill important roles, but that is EXACTLY why we should be pushing them on to other platforms.

They don't need to move entirely, but they should be trying to mirror themselves somewhere else.

Spez may not being going as power mad as Elon yet, but he's definitely looking over there, distracted boyfriend style.