I'm a dude, he's a dude, she's a dude
before this gets down voted to oblivion
What John started is a really good point. If the ladies wanted unbiased tech interview, not revealing gender is a good way to do it. It is like the internet, you remain anonymous with others making judgment on your other skills.
Part of this bias of gender came from majority of ladies putting so much time into fashion. In an economical technical based environment, fashion does not increase productivity. Only in a business and marketing based environment, it does increase profitability.
So, a tech company HR will have bias that people that put a lot of time into fashion will be less productive because the same amount of time have been used for fashion. On the other case, there are companies (including tech) that hires ladies for the looks, which in exchange means those hired may not have the technical skill.
Essential, the bias creates a cycle of ladies -> fashion -> less productive -> hire for looks -> less technical -> (repeat).
Aside from the last part where he wants ladies to dress like men (wtf?) which kinda over stepped out of the line, it may feel like a disadvantage from the way he said but, it is actually an advantage for ladies.
If they want a technical skill job, all they need to do is to not reveal the part that tells your gender and maximize their technical skills. If the tech employer cares, they will find out anyway. If you want a business and market job, they can use their fashion skill to maximize their chance of getting the job.
Lastly, remember most of we guys can only get our job from our technical background. you girls can get a job with fashion alone, but you can choose not to when you need to. Use it at your advantage.