Late as I may be adding this comment (shush, I've been busy)...
One thing the author didn't explicitly mention is that the ideals of all-inclusiveness don't necessarily stop at the borders of the various geek subcultures. Hence why you get things that 'feel' like they're being run by furries, like ElJay and, to a lesser extent, Wiki. Since most of us here are so familiar with the particular oddities of furries, it's easy to see the traits and behaviors other geeky internet circles have in common.
I guess what I'm getting at here is, after reading this article, one could argue that furries are pretty much exactly like any other wide-spread geek subculture.
...Except they're not. I daresay there is not another fandom, subculture, or internet community with quite as much drama, backstabbing, overreaction, and self-centered isolationism as furry. You might see some LJ admin come to the aid of a furry in some attempt at geeky-freaky solidarity, but you'd never see the opposite. I've been a part of D&D groups, animu groups, gamer groups; hell, I was part of the 'CompSci Club' in university. The difference is that every single one of those groups had less drama and bullshit and was actually considerate of others. Furry is the only place I've ever encountered such a mind-boggling isolationist us-versus-them attitude hidden just below the veneer of all-inclusiveness.
Also the whole animal fucking thing. Which is why they deserve to be mocked.