I see your point and I agree with you. Perhaps I didn’t explain myself. I believe the rules prohibit content that “promotes or participate” in sexism or racism. By “participate” I think it means “take part”, actively involving for a cause, not just mentioning a topic for educational purposes (that is something different, it’s not actually advocating or promoting discrimination, it’s the opposite: educating to not discriminate).
It’s clear when a game is just depicting discrimination to tell a personal story, and when a game is presenting sexual abuse for the gratification of the viewers. We all know the difference when we see it, right?