Nobody's arguing that geeks shouldn't be geeks. What they're arguing is that collections of geeks shouldn't be allowed to organize their workplaces to only accept geeks, or to prefer geek culture over other cultures.

And, in fact, no true geek has any trouble understanding why this is important. There are so many branches of geekdom that there is (or was) an elaborate geek code that broadcast ones affiliations. There are Star Trek geeks, and there are vampire LARP geeks. The Star Trek geeks are generally not OK with the idea of a clique of vampire LARP geeks refusing to hire anyone who doesn't look like they enjoy Bauhaus.

It's a common trope --- not among geeks, but among chauvinists of varying stripes --- that efforts to reduce discrimination are really thinly veiled attempts to persecute geeks. Don't fall for that. These really are the droids you're looking for.