Actually, I'm finding that UX design translates to "documented design", i.e. providing proof for every design decision.
I find your comment very similar in tone as the article: someone who is a interface designer that has had bad experiences with UX designers.
I think this is unfortunate, because I think UX design just a definition of the process that product (digital or physical) design was already doing, and now there is a common (though still evolving) language to be able to communicate the challenges of the full product design lifecycle.
To me UX is the superset for user centered design and User Interface design is a subset of it. They are both important. UX is not UI because they are not comparisons, but parts of the same thing.
Those are my thoughts and experiences at least.
Which should give you some indication why the design industry is a shell of its former self. The homogeneous nature of modern web products is concerning, but it makes sense unfortunately.