Geeks have intense interests. They border on obsessions. They know EVERYTHING about those interests. And argue vehemently for them, about them, and against others. These habits bleed over into other non-geek areas such that it felt like an intrinsic part of the culture.
For decades I doubted you could have geeks without arguments, so I find it interesting when I run across people discovering a community and getting turned off when arguments break out. They just wanted to find others who love the thing. Love led to arguments in my teens through twenty-somethings. It took making enough non-geek friends in order to realize just how skewed my understanding of reality was.
The trouble is, you better not have feelings. For they will be stepped on. Eventually. Well, unless you fall solidly on the autism spectrum. For the segments of geekdom who do, they might not be aware how they make others feel without very direct response. I am calling them arguments because to outsiders these discussions seem full of anger. to strong geeks, this is how we discuss.
It seems theoretically possible for people to get along wonderfully well. I have seen it more with children who sometimes treat their beloved things as malleable. They love them, but they can alter these impressions when they need. By shifting their opinion, they remove the conflict. Older humans are a bit more rigid.
As an introvert, small talk is meh. I much prefer deep conversations. And geek friends bring depth. Find their interests to bring out a conversation. That is easy. And to my mind a rewarding part of socialization. Finding people who wanted to talk about deep things is how and why I cultivated so many of my friendships. Having broad but deep interests allowed me to engage on many things.
Displaying confidence in so many different things is why people considered me intelligent. Given my social circles, I figured this normal so just average.
No worries. People self-select into geekdom. Either they acclimate or they move on to another group. They will keep their interests either way.