Also, girls aren't interested in videogames, especially on average. Marketing games to enthusiastic females is practically aiming at a niche market. We're talking about a minority here that's interested, and very few pro girl gamers out of that subsection.
Centering videogames around gender is dumb, and it purely a battleground for feminists. If a girl wants to play a game, no one will stop her.
If someone says something derogatory to a girl who's wants to play games, welcome to the club. That's literally why people have unspoken purity tests. No "normal person" thinks playing games is anything outside of a waste of time, so being quizzed on your gaming knowledge is not sexism. Of course, "nuance is a way to conceal evil" or some stupid dissmissive leftist statement like that.