OK, I'll bite... The article states that the only way to improve the user experience is to bring in a Designer (loosely defined as somebody who doesn't code.) I'd argue the opposite: Having a programmer who really understands user interfaces and user interaction is the critical, missing piece.

Now that I'm in deep, let me go further... A motivated programmer can learn the basics of interaction design very quickly, and get the user interface to a point where it at least doesn't suck.