Scientific American on why folks hate the GoT finale
I somehow doubt this will be the final word.
After the show ran ahead of the novels, however, it was taken over by powerful Hollywood showrunners David Benioff and D. B. Weiss. Some fans and critics have been assuming that the duo changed the narrative to fit Hollywood tropes or to speed things up, but that's unlikely. In fact, they probably stuck to the narrative points that were given to them, if only in outline form, by the original author. What they did is something different, but in many ways more fundamental: Benioff and Weiss steer the narrative lane away from the sociological and shifted to the psychological. That's the main, and often only, way Hollywood and most television writers tell stories.
This is an important shift to dissect because whether we tell our stories primarily from a sociological or psychological point of view has great consequences for how we deal with our world and the problems we encounter.