Good article Tyll. Though I don't agree that we're overly negative, I'd say we're just honest, and that most places are overly positive. There is a Pirate's Booty as well as a Wall of Shame. It's important to give companies credit for good headphones, but it's equally important to hold companies accountable for the crap they release and charge lots of money for.
Since right now the headphone world is almost all (mostly undeserved) praise, spreading awareness about the crap is probably the most important thing anyone can do for the headphone enthusiast community.