So, spoilers, I guess. But I really didn't get the Jamie/Cersei rape scene, from a pure story-telling point of view. Nothing led up to it, nothing flowed out of it, it was just this pointless, unpleasant thing for no apparent reason. It's so nebulous and disconnected that I almost forgot that it might count as a spoiler.
This article suggests that the reason could simply be that someone thought it was cool, which is disturbing if they understood it as rape, and disturbing if they didn't see it as rape. The idea of being edgy for the sake of being edgy leads nowhere interesting, and is probably why I've found the more recent seasons of GoT decreasingly worth my time. Actual plot has to be the front edge of any good story, and they've neglected that for a while.
But all of that is just artistic, subjective stuff. The more serious stuff, about legitimising rape, that's what really matters. And I think the useful connection between that and my opening point is that the throw-away, "life goes on" approach to that scene is a reasonable mirror of a problematic real world attitude.
But the points about Fury Road were good.