Federation model works, since people can make their own instance where they set the rules or join an instance that is federated with the instances they want. Like kbin.social I think is federated with lemmygrad and bunch of other places.
I think people are just having trouble getting used to the idea of not needing one central site to deliver everything they want. Don't forget. These aren't corporate run websites running with the goal of monetization, but user run and cost them real world money that they are opening up to users to use for free.
There is some degree of entitlement that isn't necessary to begin with, since if people are that upset they can make their own or join a more networked fediverse instance.