We really should convince Moxie Marlinespike to push the implementation of an out-of-the-box working bridge between the Signal client and the Matrix network. With e2e encryption, of course.
I think we're definitely approaching time when Signal / WhatsApp / Facebook Messenger / Google Messages / Matrix / etc will all become at least somewhat interoperable, and it's gonna happen very fast (~Q3), mostly because EU's Digital Markets App is basically forcing them to. (Well okay, only Meta-owned platforms are forced to.)
> It is unlikely that we will ever federate with any servers outside of our control again, it makes changes really difficult.
> ... I understand that federation and defined protocols that third parties can develop clients for are great and important ideas, but unfortunately they no longer have a place in the modern world. ...