I think it is great that he found a path to happiness. I did not think it was really preaching to all of us and suggesting any other approach is wrong. Although he did not specify what was in the dedicated room system, it might well be that he stumbled upon an entirely different sound with the likes of the Cornwall speakers.
If one is not familiar with the sound of high efficiency speakers, like horn systems and wide-range driver systems, the sound can be a revelation. There is a lot of life, energy, and micro-dynamics that many high end speakers don't deliver (they tend to sound more polite and drab). Pair high efficiency speakers with low-powered tube amps and that steps things up a notch or two. The sound of these kinds of speaker seem to grab your attention and make you want to listen longer without losing interest and focus.
Yes, the Cornwall does have some tonal balance issues and it is a little rough sounding, but, if you are in tune with its virtues, these issues can be forgiven. I don't want to cause trouble for someone who is pleased with their purchase and thinks he is out of the rat race, but, there are plenty of other alternatives delivering this type of sound that I think are much better, but, many are considerably higher in price. Cornwalls can be considered entry level in this world; don't go looking if you are afraid of stirring the beast in you.