They aren't mutually exclusive.  Yes, a user friendly interface to bitcoin is good.  As far as zkEVMs and other things like ZKPs in bitcoin they are important too.  Ditto quantum safety.  The people working on bitcoin core don't have to be people working on the user side and probably shouldn't be too much.  What is going on under the hood is the most important part of the puzzle.

So I am not sure who the "we" is he is talking about, but "he" is welcome to do whatever (or fund whatever) he thinks is the most important.  And if he really does think that, what specifically is he doing to remedy the situation?