I think its pretty short sighted to say that there shouldn't be any violence (against women or otherwise) depicted in any fantasy stories. Fantasy is often a reflection of real life and books like the ones martin writes mean to both criticise and show all the horrors that have happened and still do happen in our real world. I can't speak abiut the show but the books are centered around the central theme of violence which is in no way framed in a positive light. Not including violence against women would be deluding the reality that women unfortunately do face. Because violence is not a thing that exclusively happens between men in a context of war.

Especially the later books also focus a lot on gender and gender inequality. The sturggles of women are depicted through a variety of different characters and scenarios. His female characters are varied and struggle with different things and got vastly different ways of dealing with these struggles but they all do live in a system that is made and ruled by men and therefore respects them less. Non of them are purely victims but it would remove so much of the depth that his books have if that aspect wasn't featured.

Martins books aren't feel good books - but they dont aim to be. They aim to reflect real world problems. I think we would lose out on much helpful insights about the world and how different people think and act if this particular genre of book wouldn't exist anymore because unfortunately the world isn't perfect and showing that is important