A major side-effect of defederation-as-conflict-resolution is it creates a force of re-centralisation.
Users are mostly blind to these issues as they boil until a dramatic event occurs.
They don't identify with either side, even if they understand it, and yet suffer consequences (eg, de-fed, reputation, etc).
So they move instance, to the large/central one that is unlikely to get blocked and even so it wouldn't matter cuz everyone's there. People proposed this!