Quelle surprise... the open source Linux crowd don't value UX. That's probably the one remaining drawback of so many otherwise excellent projects - the interface is cobbled together by programmers who think that there's nothing wrong with requiring users to know dozens (or hundreds) or key shortcuts.
I understand things are improving in big-name projects though; tools like Blender and Gimp used to be prime examples of this problem and I seem to recall OpenOffice had a bit of "just put options under a menu, it doesn't matter which one".
UX IS important. Unless all your users are nerds.