> Except XMPP uses DNS for message routing from a human readable handle, user@host.com, but Matrix uses a central database "identity server" operated by Matrix.

> Except XMPP uses DNS for message routing from a human readable handle, user@host.com, but Matrix uses a central database "identity server" operated by Matrix.org and federation fails if this service goes down. This statement is almost entirely wrong. The identity server is A) only for mapping 3PID (3rd Party Identities, i.e. email addresses or phone numbers) to matrix usernames, B) can be self-hosted, and C) not required at all for federation. Federation does not in anyway require services provided by Matrix.org