I agree and this will be true for any social platform. This could also happen to communities within lemmy.world.
I think the main advantage of lemmy (or activity pub in general) is the fact that it’s protocol is open source which allows people to spin up their own versions of a platform without end users “necessarily” having to change clients (this obviously implementation specific).
The fact that activity pub is federated is a bonus because it makes the whole “moving to a different community” easier but i see the fact that its open source as a much bigger benefit.
My creative outbursts usually happen while I’m doing my chores. My showerthoughts are usually doing-the-dishes-thoughts.