I mean if the users of one big instance would be on 100 smaller ones, it would provide a more granular ability to defederate.

I'm only pointing out that the whole idea of the Fediverse would be to register wherever, where you feel "at home" with like-minded users instead of just making an account at the biggest server, as that makes managing the network untenable.

I'm just saying this is one of the reasons there shouldn't be a "big 4" of instances. Especially as the Beehaw guys seem to be acting out their powermod fantasies.