[ripb]

It's quite likely that many of his choices regarding non-programming hobbies have been highly influenced by programmers/tech people around him in the workplace or outside it.

He also likely has developed biases, not on socioeconomic grounds but through his own experiences and influences, regarding certain things in society. Football, for example, he probably consciously or subconsciously regards as being something for "jocks" or the people he didn't get along with in school (presumption here).

Ultimate frisbee, however, is probably something he regards as being in-line with that with which those that influence him partake in, or that which he imagines his peers (mainly techies) would approve of.

It's an ok article from the point of it being a look at someone's personal experience, but it's certainly more reflective of his experience and the bubble he lives in than a commentary on society.