In that case though, why claim to be "decentralized"? That to me means one large, interconnected network, which one can access through any of its members. Mastodon is decentralized; you can make an account on any server and search and follow users on any other server without leaving. Bittorrent is decentralized, you can grab info from the DHT then connect to peers and download stuff.
If it depends on an index/searching service, how is the network itself any more decentralized than say an FTP server? I wouldn't call FTP decentralized.
