Everything you might use relies on a protocol down the stack. XMPP happens to be the only one to date that is an internet standard (IETF), is extensible by design (past/present and future use-cases can be build into it, what makes it still relevant 25 years later), is federated (but not P2P, a good trade-off for mobile usage), has a diverse/multi-partite ecosystem of client and server implementers (sustainable and resilient), and is deployed successfully at scale (on billion of devices).
Sure, now which pre-existing piece of xmpp based software checks all the feature boxes as noted by both Signal adherents and myself regarding Session? Are you implying the lay user code their own? If that exists you could have just linked to it rather than engage in whatever this is.
Everything you might use relies on a protocol down the stack. XMPP happens to be the only one to date that is an internet standard (IETF), is extensible by design (past/present and future use-cases can be build into it, what makes it still relevant 25 years later), is federated (but not P2P, a good trade-off for mobile usage), has a diverse/multi-partite ecosystem of client and server implementers (sustainable and resilient), and is deployed successfully at scale (on billion of devices).
Today’s XMPP uses the same E2EE as Signal/WhatsApp/Matrix/… XMPP had end-to-end encryption 10 years before Signal was invented
Sure, now which pre-existing piece of xmpp based software checks all the feature boxes as noted by both Signal adherents and myself regarding Session? Are you implying the lay user code their own? If that exists you could have just linked to it rather than engage in whatever this is.