Garbage.
In fact, I almost wrote nothing more. But what utter absolute trash. The guy has by his own admission never ridden a fixed gear for anything like an extended amount of time nor has he actually done any research among the participants in said activity to try to understand why they like it. Further, he conflates fixed gear, track bike, and brakeless with complete obliviousness. Which, I suppose, is to be expected since he didn't bother with even cursory research.
That article might as well have been titled, "My Preconceptions and Why Others Suck."