Moxie Marlinspike, in his 2016 propaganda piece ignorantly bashing #XMPP, had one valid point: Enabling end-to-end encryption in a homogeneous environment is easier than introducing it in a heterogeneous #Jabber. Nobody is denying that. However, if something is hard to achieve, either try your best and don’t give up, or put your head in the sand and create yet another walled garden that is no different from other proprietary solutions.
The rocky road to #OMEMO by default
https://gultsch.de/omemo_by_default.html