Specifically, it mentioned that these 'games' and people choosing one or two games out of a great number of games available out there seems like a uniquely North American thing (as far as we can tell from our own limited exposure to other societies).
So while you folks had the jock, the nerd, the artist etc. , we had schools, teachers and parents that taught us we should strive to excel at everything, i.e. play every game and try to play it well.
Its a little disappointing to be put into a bucket by North American folks because they assume everyone is good at just one or two games. Not trying to be disrespectful, but i personally also think a little less of people that take so long to come to the realization that the author did in the article. A little ironic, if you think about it.