I know, but it's clear that CD Projekt is merely extending the universe. Although I have not read the books, the fact that Geralt doesn't have sex with other males doesn't necessarily mean that he isn't bisexual. People could change, you know.
I understand what you're saying, but changing a character's development for the sake of 'political correctness' isn't really an appropriate justification.
While you're at it, why not question where all the black people are? Or Asians? I mean, midgets (dwarves) get representations, so why don't indians?
My point is, when you enter a world you accept it for what it is. Bioware includes different shades of sexuality and different races because they want the gamer to relate to different characters. I would argue though that worlds don't always need to be 'relatable' to be 'immersive'.