The good thing with federation is that I as an individual can make decisions about who I federate with - be it an individual or an entire instance. There's even some middle ground to customize your choice (silence vs block).
And now, the "federated islands" concept is kicking up, which is really cool. We have many choices - the decision is not mandated for us.
https://writer.oliphant.social/oliphant/islands-an-opt-in-federated-network