If federated communcations is a desire, OMEMO[1] is a thing.
However, there are issues with federated protocols beyond the velocity issue that Moxie mentions. Some of them are technical and some of them are not (see conversations.im comment on doing xmpp notifications on iOS for example), but they do exist.
However, there are issues with federated protocols beyond the velocity issue that Moxie mentions. Some of them are technical and some of them are not (see conversations.im comment on doing xmpp notifications on iOS for example), but they do exist.
1: https://xmpp.org/extensions/xep-0384.html