Also, for all its purported "historical accuracy", I've read a hilarious take-down of it by a military historian pointing out that GRR Martin has no understanding of Medieval warfare, no grasp on tactics, strategy or logistics, and just teleports armies around the (unrealistically huge) map as the plot requires.
Also, Jon Snow is a completely shit tactician. He never managed to win any sort of battle without third party intervention, and not before he'd managed to get a load of his mates killed. I don't know why everyone was so desperate to follow him.
Goosefoot the post you quoted originally was challenging the idea that GoT had to have lots of rape and nudity because it made it more "historically accurate", by pointing out that there were lots of things about the show that were definitely not historically accurate. It always seemed to be a very selective defence adopted by people who didn't really want to think very hard about what they were watching and why. The fact that it was a fantasy surely gave it scope to take a more creative approach than just "woman's character is developed in response to her brutalisation" or "prostitution was totally normal in ye olden days so here is a man having a bath with two jolly hookers". You said yourself:
it is usual for actors on shows to be more cleaned up than people in historical settings really would have been. No one really wants to look at the pimples, boils, goitres, and bad teeth of the past.
It's a case of not being able to have it both ways. Either you're making a gritty, brutal sort of a show with narratively justifiable nudity and sexual violence (which would involve all sorts of body shapes and states of deformity, since it wasn't only beautiful, hairless women who get raped), or you're spicing it up with titillating crotch shots. Fair enough if it's the latter, but people could at least own it and not try to make intellectual claims for why it was done that way.