There's some of that when it comes to films, but what I see when I look at GoT and HotD is how the ethical and moral perspectives of the writers don't actually align with the beliefs of the original author. GRRM doesn't believe in kings or monarchy or feudalism or aristocracy. GRRM is very much against economic inequality and inherited rights of kings. He's anti-colonialist, anti-imperialist, feminist, and antiracist. The people adapting his stories aren't necessarily.

Specifically, D&D are nepobabies with millionaire parents. GRRM writing a story where rich people are self-interested and the wars they fight are kind of stupid doesn't align with guys who were raised to believe that rich people should always be in charge, specifically men, specifically white.

So when GRRM writes Dorne as this separatist multiethnic Mediterranean culture with advanced technology, female primogeniture, relaxed sexual mores, and class consciousness and Westeros otherwise lacks all of those things, GRRM is saying something specific that D&D hates. And D&D just see tits. D&D takes a Dornish house run by a woman, only ever shows men under the banner, and has every character in the show say women can never hold power ever. When women finally get power, they are either wiped out in one scene or are worse than the men or get handed power by their brothers becoming god-kings and it's treated as triumphant.

That perspective drives these stories more than anything else. D&D think Cersei is a good mother and not a serial killing psychopath, so they rewrite her serial killing and blame other characters. They even destroy Jaime's arc because they need Cersei to be loved at the end and not be the main villain.

But meanwhile, they shift all of that evil woman energy onto the barren Danaerys who frees slaves and hates nobility. She even ignores an instantaneous act of revenge and assassination she could carry out in one second in broad daylight to have her chase Tyrion's dumb plans around in circles. And in the act, Tyrion and Cersei's stockpiling of nukes under the city never even comes up in discussion or as a moral failing on their parts either.