E.g. I get room keys as a security feature. I did read the Matrix spec. But IRL I find myself carrying USB stick from computer to another in order to have anything readable if a room is encrypted. I.e. I can either use recovery key or authorization request to activate a client but it gets you only hafl-way there.

This makes me feel that UX was designed to fit the security features and not other way around. And if you talk to a Matrix cult member they will say to you that you're not getting it.