How do you mean? To me a network is decentralized if there isn’t one controlling company or organization. In the fediverse, I can set up my own instance of mastodon/lemmy/honk/whatever. The fact that I can use honk to follow people on mastodon and interact with them in a smooth way is interoperability to me. I don’t need both a honk account and a mastodon account. This is a good thing imho. I can choose which software to run, or which home server to join, and still interact with people using different servers.