

Piefed isn’t lemmy so voyager won’t work. I believe interstellar does work (I use it for my alt on mbin and it’s a nice app)
OP, as you see, you’re not stuck in your instance and can interact directly with people/communities from other instances. I believe that piefed also let you follow Mastodon account, but I haven’t tried piefed yet
When I took the First-aid/CPR course, the red cross trainer spent like 30 minutes doing a list of what can realistically happen where we are. An interesting exercise.
Full blown apocalypse is unlikely, but doing stuff like checking the flood-risk map before renting/buying a home (Especially ground floor apartment and single-floor house) does wonder at not having to evacuate. Knowing the kind of dangerous factory/goods in your area also helps a lot planning for the right thing.