Actually, his conclusion itself was also sourced: his main contention was that Google should reconsider its positive discrimination policies, and he cited a WSJ

Actually, his conclusion itself was also sourced: his main contention was that Google should reconsider its positive discrimination policies, and he cited a WSJ article reporting that positive discrimination can lead to more gender strife. I think the standard that you have set for the author expressing these opinions is unfairly high, and the bar that you have set for yourself for criticizing him for expressing that is unfairly low. You criticize that the author has cherry-picked his sources; you now have to support that claim by showing the deluge of counter-studies that show that it is not true that women are inclined to X personality. I've checked the Slate article and it doesn't link to sources that show that. In fact, the first paragraph of the article links to articles that agree with that WSJ article and with the author that discrim. leads to gender strife.