Because this is a popular show with a huge female fanbase and a large % of them are tired of it.

I’m tired of serious issues being used as fodder for shit writers because they think it’s ‘edgy.’ It’s the equivalent of a white teenager thinking saying the N-word is ‘edgy.’ I feel this way of many topics -

Uhm, I also despise those rape-vengeance stories where the movie starts off with a woman getting brutally gang-raped and then she hunts down the men who wronged her. It’s cheap. And more often than not it feels like the rape scenes are played to be salacious - as is the case with GOT.

He said that in the article. Don’t use rape as a device to advance the plot of another character.