Where it does start to get weird, in my experience, is when it starts to cross over into the gaming/anime/fandom area, particularly gaming. Some of those people are really maladjusted, but I suppose that's to be expected from a subculture based around endlessly celebrating childrens toys.
There must be some generational/geographical divide here somewhere. For reference I'm in the UK.
I guess there always has to be a group of people for others to look down upon.
Sure. Lacking social skills certainly doesn't help you in tech; it just hurts you less than in most other fields.