That's one take on it, and I've heard the maintainer of mastodon share similar sentiments. I disagree because as long as the servers are all interoperable and people can communicate across them they can never actually become silos.
An architectural feature of a federated system is that people congregate on servers together for whatever reasons they have. Communities are an emergent part of this architecture whether we like it or not, and this can be used to create a positive user experience that you cannot truly get on centralized services. What we wind up with is a network of communities that interact with one another, not as some people envision a network of superfluous servers that humans use simply to interact with one another, and this is unavoidable in a federated system like this. If we do want a network where the servers are meaningless to the social interaction it has to be fully peer to peer.
An architectural feature of a federated system is that people congregate on servers together for whatever reasons they have. Communities are an emergent part of this architecture whether we like it or not, and this can be used to create a positive user experience that you cannot truly get on centralized services. What we wind up with is a network of communities that interact with one another, not as some people envision a network of superfluous servers that humans use simply to interact with one another, and this is unavoidable in a federated system like this. If we do want a network where the servers are meaningless to the social interaction it has to be fully peer to peer.