I find it interesting that you feel this advocates gender discrimination. I am opening a dialog that women in tech feel that other women are harsher on them then men. The article was started by a woman. Bias towards women in tech does not only come from men. It comes from women too. We need to discuss all the angles it comes from to remove the bias.
"Thoughts from an office full of hoodie-wearing white guys" was probably a super-bad way of stating the article's subheading, then. If it's perfectly fine that the office is full of hoodie-wearing white guys, then why make a big deal out of their presence?