I think this is a big part of it right here. I've always felt that there was a strong #humblebrag component to a lot of this bitching and moaning people do about how socially inept and awful they are. It's almost like a personal reaffirmation that they're a harder-core INTP than the rest of us peons. "Ohhhhhhh woe is me I pass out from social anxiety if I have to order for myself in a restaurant. Look how much of a caricature of an INTP I am." Gimme a break. I don't think everyone is necessarily like that, but I've definitely gotten that vibe on many an occasion.You're thinking too long and too hard about yourself and how the world reacts to you or might react to you or could react to you in a worst case scenario. Instead of being less self-absorbed than others, you're actually more self-absorbed.