It's basic primate psychology, status is the key. It divides the society well-enough that if a majority are not inconvenienced, then the doublespeak creates a denial at all scales. Even things that are obviously absurd like vaccine denial aren't about across the board policy, the exclusive high status can still gain them. The policy and others are used as a political wedge to create eugenics, racism, whatever the underlying status-bias curve that gains them the weird pluralities to maintain a semblance of power.

Humans are dark matter communicators. We code all the top-down biases seamlessly in news stories, speech, novels, movies, always as a by-product of social and virtue signaling. Even altruism comes with a handicap principle. Ultimately we are followers, not leaders, or adventurers, that would be chaos. If the leaders can fool the populace by mixtures of narratives, and sleight of hand oppress on behalf of enough pluralities status, the audience id placated and inert.