AR view of humanity

Lot of game theory underpinning it. Namely that certain truisms and patterns happen whether you participate in them or not, and don't care what your opinion of them is. In fact, one can argue there is an inverse correlation between how moralistic said opinion is and how much it matters. The biggest example of this is how the AltRight contends that tribal dynamics will happen regardless of any individualistic veneer, that said veneer is more akin to wishful thinking than a sober observation about human behavior, is often an insincere or naive virtue signal from its own proponents, reeks of desperate propaganda, and to go further they'd argue that said any truly atomized individuals are more susceptible to being mowed down by collectivism and identitarianism when they inevitably flare up. As those are immense force amplifiers which cannot be wished away and giving greater fitness to said tribalists when the chips are down.

Another example would be the claim that eugenics and dysgenics are practiced regardless of what one's stated opinions on them are. It's basically impossible for society to "run in place", genetic drift means something is lost each generation from an inability to competitively reproduce itself versus other traits. And when one chooses to marry their college sweatheart over crack whore they are personally practicing eugenics

The altright view of humanity is softly nihilistic.

Obviously the notion that the world is tribal already supports that contention. But even with tribes there are other tribes, and the claim that all mass politics if just one kind of person trying to get one over another person would not be disputed.

That may require some explaining, fortunately the second aspect helps with that. Biodeterminism. Obviously genes do not account for 100% of variance but they are ever-present, to an extent dictate what environments the person/group are in, how they react to those environments, what environments they choose or create, and ultimately just overpower absolutely everything else in any setting which has the bare minimum stimulation and stability. Particularly since there are no good environmental interventions with a strong causal effect (headstart programs, religion, or even being an ethics professor notoriously dont make people smarter or more moral). And since one hits diminishing returns once the bare minimum environmental needs are met (school quality is a fixture of the kids for example, not an external force onto the kids)

Even things like political alignment, religiosity, belief in free will, belief in blank slatism are genetic. Obviously specific religions and parties will be socially constructed but what values resonate with you and what rhetoric or argument convinces you is genetic. And the broader environment (the part that actually matters for your outcome far in excess of home environment) is not constructed by you but by Elites also following some genetic impulse.

Even worse, many objectively wrong beliefs (like free will and blank slatism) seem to be in the most fit minds among us, the people who decide the course of society. Perhaps a side effect of great agency or intelligence is a ridiculously romantic view of humanity?

Brains are designed as lawyers, not judges, they are designed for fitness and not truth seeking. Hopelessly arrested by motivated reasoning, further compounded by other extrinsic concerns. Be they political, materialistic, social, tribal, or whatever. As such man cannot divine any greater truth. The most man can do is devote himself to something greater than himself which will endure and make life better. Even if it's not the most rational or optimal vessel to some, what matters is that it works.

Put in essence: people are meat puppets. Genetic carriers for memetic viruses.