I wouldn't read too much into it (excuse the pun).....It's probably more a combination to do with high-end Naim owners being relatively self sufficient, being looked after by their dealers and also hanging out at specific forums such as Naim's...
I don't think there's anything wrong here (WhatHiFi), all very welcoming, and it doesn't seem to matter a jot to the staff whether they are talking about a £15k CD player or a £80 one...It's all relative...and valid. Bare in mind the magazine, and hence forum, has a vast scope to cover, at all budgets, so I'm often impressed they both manage to do this the majority of the time...
At the end of the day it's about your own ears, and what you like and believe in, that matters....Opinions, are...just that. Take them in, let them guide you and counter balance thoughts, but at the end of the day, it's your call.....I'm planning to change all my gear to a Naim set up, for both Stereo and AV, once funds allow, and to be honest, I couldn't give a monkeys what the majority of 'opinions' and 'preferences' out there say - I've reached the plan I have with a few choice reviews, a few opinions and most important of all, my own ears....I don't feel the need to get into lengthy debates of one brand vs the other, what's the point, and I'd much rather spend my time on here sharing and gaining advice or experiences in other areas, particularly things I don't know about...
As mentioned above, if you need some 'home comfort' then head over to the Naim forums every now and then. They do seem friendly and helpful from what I've read, although I have to say, I think it is moderated by a facist. You'll soon see how chilled out the bunch are here...!
Back to Naim, I love their kit, but they do, for me, seem to have an uncanny similar place in the HiFi world as Leica cameras do in my profession. They both cost the earth, heap their long reputations on quality and extreme attention to detail, embrace the 'less is more' mantra and arguably are the best at what they do (IMO)...They also inhabit marketplaces where in the face of mass consumerism and mass production, whether it be Sony or Canon, they are best described as 'Niche'....However, it is also more than fair to say, they are both also over-priced, often under (or low) spec'd, slow to the market and at times, elitist.
I wouldn't go without my Leicas'...and I expect I'll feel the same about any boxes I buy from Sailsbury.