I think he knows more than you are giving him credit for, yet continues these little rants and banters for what reason I can't hope to guess. Anarchy has contributed a few times around here, enough to not make him a complete troll IMO. I do wonder what he is really looking for in these threads though, he knows more than the newbies think, yet seems to fallow a code to his posting habits and thinking process that I just don't get. One second he asks for info, when its presented he acts the expert (sorry, I know how you feel about that word, anarchy) and tries to shoot everyone else down without actually posting a single factual comment in rebuttal, just replies with his typical remarks that he posts if for no other reason than to amuse himself and satisfy his very unique perspective on audio.
I can't say his post on this thread is useless, I have personally found THD+N measurements to be somewhat worthless in actual listening sessions. I am sure most anyone on here would heartily attest to their own ability to hear distortion, yet if a true test were conducted to see how this correlates with real distortion data and our listening sessions, most would find themselves very surprised with just how hard it can be isolate what problems (if any) are being heard and how to distinguish them. The klippel test is a great one to try if you want to learn more about isolating distortions. I have found that even though I tested fairly well with them, I still can't isolate which distortion I am actually hearing if its level isn't quite loud. Just because I can hear something is wrong with a recording when I hear it played next to the "right" two seconds later, doesn't mean I can readily identify what that is in a real world situation amongst the plethora of other issues that present and when my audio memory isn't constantly refreshed.
It may surprise you to know that I have discussed these issues before with certain audio "celebrities" on this forum via PM in the past. Just because anarchy posts it in his own way doesn't mean the thought should be discounted.