It's decentralised as in federation. There is no central host, only instances that users can pick from (or self host). And to make it more than just a self hosted service, those instance hosts can link their networks together and allow users to interact across the greater web of federated instances.
So it's decentralised in the sense that Mastodon or Matrix are.
Decentralized doesn't mean peer to peer. It merely means that there's no central provider -- for example, e-mail is decentralized, while Discord isn't.
Distributed would be peer-to-peer. Decentralized can be client-to-node with no central node. A lot of people use these terms interchangeably and call distributed systems decentralized since distributed systems have no centralization either, but this system with federation is also a valid decentralized system
It also says "federated". Assuming that's actually the case, and that servers talk to eachother
If the identity is based on a cryptographic key, I assume you can move your account to a different server? Even without help from the original server. But not sure how easy to move the contacts in that case.
Exactly my question as well? Its like saying Tabasco the sweetest honey in the market!
decentralized as in no central server; p2p is not synonymous with decentralized.