She is mischaracterizing his statement. He said we should remain open to the possibility that the differences in achievement in the physical sciences and mathematics between men and women may be due to genetic factors. Most of the firestorm following his remarks was generated by people whose minds are firmly closed to evidence.
It would be difficult to explain the disparity in representation among the sexes in top flight chess players to anything but genetics. Regardless of whether producing top flight chess players is a good thing, or indicative of desirable traits in the real world, the disparity is real.
There are some pretty heavy duty female chess players now. My guess is that it is genetics, but not because of raw brain power. It's hard to get women interested in a highly computational game of psychological and mental warfare.