I'd say about half of Steam players aren't male. The "video games are for boys" thing is kind of a self fulfilling prophecy because anyone who believes that will obviously not play with a woman.
I think that it's true that games are definitely being played by both males and females today, but I think that statistics is that mobile games skew female, and PC games skew male.
the comment you replied to is a homophobic dogwhistle.
The tech sector is rife with blatant homophobia, racism, and a false sense of intellectual superiority. Hacker News is an excellent cross section of the typical techbro culture.
It's not my point, but I don't think you're giving a strong rebuttal either.