Telegram indeed does have excellent UX, speed and multi-device support.. as all clients are open source, there should be a (convoluted, rocky) way to port them to use the matrix protocol (an idea I've had a couple of months back).. or, instead of one-time porting, insert a protocol bridge running as sidecar in order to be able to keep in sync with upstream TG code (Pavel himself seems to be doing _immense_ amounts of coding on it)..

Anyone up to the challenge?

being able to use a telegram client for matrix would be great, but the problem with matrix is not so much the UI but the complex handling of encryption which can sometimes fail. unlike deltachat which downgrades on failure, which is bad, matrix stops working on failure, which for the average user is worse. a better UI won't fix that unfortunately.

still i like the idea. but deltachat also has a nice UI, and for matrix i use fluffychat which is also quite nice.