What I want to say about the UX is that it is so annoying to me that I don't like dealing with the program at all. If something is so clunky that it seems to get in the way more than enabling me as a user, then I will find alternatives that let me get things done more easily and with less frustration, and all the functions and features of the GIMP do nothing for me.

But then again, it's a free program and I'm not owed anything by its authors and contributors. It's just a little... sad, maybe, to have all their work UXed into relative obscurity, at least from my point of view, and probably that of a few other people who share my frustration. And even so, if this is the way they want to make the GIMP and they're happy with it, then more power to them - and less to me.