'the dorky kids'
they would also never choose to hang out with each other if they had a wider pool of friends to choose from.
People do use "dorky" men as a last resort to have someone cute so they don't sit and rot alone.
They don't have the social skills to get along with each other
For the most part even awkward people are put off by socially inappropriate behavior in others. Not everyone who falls into the admittedly vague category of 'awkward' has off-putting tendencies, but some do. For example, they may be too blunt, strange, argumentative, or condescending. They might also be carrying around the wounds of being bullied and ostracized, and be reflexively guarded, suspicious, and hostile around other people. If you put a bunch of people like this together they're going to rub each other the wrong way.
That's what my friends from up north are like. You'd find that out if you met them. They're Floridians now. They were all crazy about "what you did" like in a secret way like we should already "know something." I don't mean to disrespect anyone if it's something serious. I know they're mean to me, tho.
Dysfunctional social rules can develop within a group
If a group of awkward people do end up becoming friends social rules may form that create a more grating atmosphere for everyone. Sometimes these rules are inherited from larger subcultures. For example, a group of guys who are all fans of a certain TV show may have the rule, "You should feel in constant competition with everyone over who knows more about the show".
That makes sense. I experienced a lotta bullying online about being a fan of Johnny Depp. It's like they had a restrictive club. I haven't gotten very far online.
If you get a bunch of so-called awkward or dorky people together
They probably won't get very far but might go ***.