Quote: making all of it seem overall nihilistic and unappealing.
I think that was the point of Game of Thrones. A completely nihilistic and terrible game that those in power play with each other. It's just really hard to have a gripping and spellbinding show based on ugly shit that royals probably still play with each other to this day. Eventually, you see it for what it is, and people hate it. That's why they usually keep this shit from us commoners. And when commoners actually genuinely get mad, ropes usually come out.
Hoillywood producers and directors prefer nudity and sex scenes because they're easier to make than actual on-screen relationships. (The private porn part notwithstanding.) One of the more telling non-sex scenes that stood in for a sex scene (and affected on-screen relationships) was in the movie
The Enforcer (the 3rd
Dirty Harry movie), where his completely inexperienced female partner basically tells him in a roundabout way that she wants him. The scene ends with them heading off to get some drinks. That implied sex was a whole lot more powerful than an actual sex scene, because it affected how the two characters interacted with each other in subsequent scenes. This is far more powerful than two people stripping nude and getting it on.
tl;dr Hollywood is out of ideas so badly that sex and nudity are their saviors, which are rapidly losing their power to save Hollywood.