The newest one is neckbeard, and I think that really puts the "like you but not enough" concept into perspective. Like, what the fuck is a neckbeard. No one has ever met a "real" one in real life, because it's just a catch-all term. Same with "social justice warriors." It's freaky how the internet can just do that with labels.
Oh, I dunno. There are true neckbeards in Seattle. Thing is, there isn't that much endemically wrong with them. I mean, Lincoln was a neckbeard. Up where I knew 'em, a "neckbeard" was more likely to be into Steampunk and likely had a BMI over 30. You're right, though, "basement-dwelling neckbeard" is a highly refined sobriquet, just like "teenaged crack-whore welfare mom." There's probably a couple out there somewhere, but they aren't hell-bent on voting for Obama, they're hell-bent on turning tricks for cocaine.