Back in the day before the rise of Facebook, there was an open source service that combined all the popular messaging protocols - MSN, AoL, IRC, etc. It was called Pidgin[0], and it never got particularly big. I see the same thing here. While it's interesting, I'm failing to see what the use case is. What's the niche that needs this solved in a big way? [0] https://www.pidgin.im/
It was not a not a service which was always on and synced between units.
It was a client you had to run on your machine and keep connected. And it obviously didn’t roam.
Pretty much an apples to oranges comparison.
Matrix and Element aims to bring all those things you mention to a single protocol, to which you can connect any client you like, on any device you like, and roam as you like with all your clients always in sync.
It’s what Pidgin used to deliver, levelled up and connected to the “modern” (read: closed) IM-silos the majority of people are using.
It’s definitely different and it’s definitely interesting.