I think the point was, there's a difference between reading about a child making the decision to kill another child, and watching it. People are going to react differently to that scenario based on the medium it's in, which is why adaptions don't simply use the book as a screen play. You can't always film what you can write. If there was a scene with Arya getting raped over 2 or 3 pages, you imagine them spending a min or two on that? Or simply showing her getting dragged into a room or bed before cutting away.