I think NPCs hate ornate yet objectively beautiful things because their herding instinct overrides their innate sense of beauty. Ornament is not in fashion, it contradicts slave morality, submissive minimalism is the style of our times. Those who love and radiate beauty are afflicted with jealousy. The anger and jealousy of the masses is feared by the current decadent and worthless ruling class. Among them it became a sign of good manners not to be too bold and to be ashamed of one's wealth in a certain way. But that didn't resolve the status game. The equally decadent lower classes have noticed that a reserved lifestyle is now a value among the upper classes. And because these hypnotic masses think that what the upper class considers good must be high status and also good. So minimalism gained high status. Thus, classical high-status behavior (which was characterized by boldness and the expression of beauty) became a mark of lower-class behavior, behavior that does not conform to modern customs. The worship of ugliness and minimalism became high-class behavior. And in this way the Herdenmensch stood against beauty in the name of fashion.