I wrote this article and was very surprised someone posted it on Hacker News, where the audience is highly technical. Your criticism makes it sound like the post was intended to be the ultimate guide to custom building silent PCs for the technically inclined. It was not. It was meant to answer the question: For about $600-$700 can an ordinary person with no technical know how buy an off-the-shelf system that is very quiet (and clean, while you're at it)? Among the thousands of possible off-the-shelf systems, what simple rules of thumb can you apply that insure the system will be quiet and clean?
Excluding my friends in computer/technology only a small number of people I know feel comfortable reinstalling Windows and hunting down all the drivers (I know how to do it and I personally find it to be an annoying waste of time). None of my nontechnical friends and acquaintances would buy a custom-built PC. I considered doing that when I purchased the systems and decided not to invest time in learning how to do it right (I agree with you that silentPCreview is a great resource for going down that path).
I considered the Mac Mini - which was quiet enough. But to run Windows Media Center I'd have to buy a copy of Windows and to run movies an external DVD which brings the cost up to about $1000. I considered boutique builders like Pugot but they all charge $1000 or more for their better Mac Mini like systems.
I actually started to write a much more detailed article half a year ago that you would no doubt have preferred but abandoned it because I thought only a sliver of systems building enthusiasts would care. My blog usually tries to make technical topics understandable by the masses.
I sometimes share my posts here but didn't consider sharing this post for a second - not the right audience.