It’s really the idea that marginalized people in films and shows can’t just be happy, or have good things happen to them, even on the most innocuous shows and movies, that you wouldn’t think would have such scenes. It’s always about their trauma, or something traumatic is always happening to them, because that’s what’s “gritty”!
Gays and lesbians, women, PoC being killed or tortured to advance the agenda of white characters gets old real fast, and sexual assault of women is primarily used, not to explore female characters motivations and emotions, but advance the plot of male characters, and in the case of GoT, simply to be titillating. I’m glad the show is mostly forgotten.