Women are absolutely capable of mastering the technical aspects of it. My former classmate did, and she is a very creative artist whose work I love. I respect her as a person and an artist. There are several women here on APUG and on the Leica users group and Rangefinderforum (other places I talk photography online) who also create magnificent work and have mastered the technical stuff too. Still, based on what I have seen, I think most women do not have the desire to do so or the drive to succeed as professionals. If that upsets women, they alone have the power to change it. Shooting the messenger might make you feel good, but it changes nothing.