Interesting article, but I feel like it oversimplifies things a bit. With the possible exception of obtaining a patent, I am not sure that the things listed (earning a PhD, publishing a scientific article or literary work) are necessarily the best measures of anything we can call "real world" success. They are also not that exclusive anymore. See this article, for example.
http://www.nature.com/news/2011/110420/full/472276a.html

Of course, it all depends on how you define success. Wealth? Prestige? Happiness? Perhaps you could argue prestige with these measures, but not the other two.

Also, I have mixed feelings about this article. What is their purpose in writing this? Because it seems like it could just feed into the ideas that we don't need to worry about PG kids because they'll be fine, and increase the social distance between them and "everyone else" creating an increasingly lonely position.