+1 to this. Imho it's not good for lemmy as a whole if people are concentrated on a few large instances. Any time one of those major instances experience issues, the effect is going be major.
That's why I created this lemm.ee account. It seemed silly just waiting for lemmy.world to come back up all the time. That's the beauty of the Fediverse. 😁
Performance is also overall better via other instances. We were hesitant about migrating /r/android given the LW downtimes but ended up doing so when Cole offered us a place on lemdro.id. Awesome uptime and great performance thus far with his scaling solution - keeps costs low as well.
I think it's "easier" when you first come to Lemmy (or similar) to join the biggest server with all the communities. Being able to interact with communities everywhere, despite where your home instance is, takes some time to conceptualize. I actually think Lemmy has been easier to understand with that than, say, Mastodon.