[MartinCron]

In this case, 20-30 year old males

This perfectly encapsulates my unease with this kind of recruiting/self selection approach. I get that culture fit is important, but I also don't like the sort of groupthink and monoculture that you get by just hiring a bunch of people who are all into the same narrow pop culture niches.

I'm guilty of this kind of monocultural preference myself. I used to joke about starting interviews with "What's your favorite Hayao Miyazaki film and why?" although I never actually did it.

[pattern]

I understand your point, but just because we all love Miyazaki films (the objective truth :D) doesn't mean we each don't have our own unique traits/interests/hobbies/etc. that provide a well-rounded cultural outlook.

I agree with your notion that in hiring one should maintain a good balance of breadth and culture fit!