I agree with what you, and warren, have been back-and-forth on. But I think the reality is, the majority of people who are deriding those products likely haven't heard them - it's popular to rip on the cool kids after all. And all that. I'm not saying that if you sent out the Beats headphones to all of Head-Fi that you'd see unanimous positive response in threads though. The other problem, methinks, is fake headphones tainting the pool - there are A LOT of fake Beats, Bose, etc headphones on the market, and they are very common. IME fake headphones always sound horrible. Again, I'm not trying to excuse anything, just some more insight.
Regarding the legitimate products, they're unpopular for a reason - they cost a whole lot, are not very durable, and have other comparative flaws relative to their competition. In the light of what that money should buy you, it's not hard to see why most people get up in arms about it (because, and I may be off base here, but I'm assuming that most people on Head-Fi are not billionaire playboys, so wasting $300-$500 is not a "oh well" and ensuring that the money is spent well is pretty relevant to most people). I agree that the vitriol and derision directed at people innocently asking questions is somewhat disheartening, but that's part of the problem with a forum-based system - to the new guy's view, they're getting their face bitten off, but to the veteran, they're the millionth person this week to ask the same exact question and expect the same exact answer.