Given that I am the highest ranked woman on Hacker News, I think you are clearly in error. Historically, women have not been warmly welcomed here and not taken as seriously as the men. And if you can't admit your gender for fear of discrimination, that closes doors in terms of business. The men are never advised to hide their gender. Yet people seem to think that's an actual solution for a woman. I can't fathom how on earth anyone can say that and not realize they are just reinforcing sexism in an extreme and horrible manner.
Also, it seriously doesn't work to tell me "there is no stigma -- all you have to do is hide those facts about yourself." If there is no stigma, why on earth would I need to hide them? Or to blame me for admitting that I am female and homeless. Hiding information about yourself is another burden to communicating and can complicate the hell out of attempts to accomplish anything when you need to work around certain things but are compelled to not mention them for fear of stigma.