Nobody cares that society is a collection of competing genetic subgroups. Lots of studies show that our genes shape our political beliefs, for example. But we don't care. If I'm hardwired to be a liberal, I'll go on believing in the same things I always do. Same for conservatives. It's a recipe for gridlock and talking past each other. Who cares!
We're hardwired for a lot of things. There are mainstream and well-regarded books on the sports gene, that some of us have, and others don't. Less mainstream, but equally well-established by scientists is the heritability of IQ.
Interestingly, if you're hardwired to be a liberal, your view of IQ heritability is likely to be "IQ is not heritable you Nazi!" or something equally profound.
The most interesting human hardwiring is discussed by Michael Gazzaniga, a well-respected, mainstream scientist. Read his book "Who's in Charge?: Free Will and the Science of the Brain". He'll tell you how we humans are hardwired to to make-up or “confabulate” plausible-but-often-false explanations for our behavior. We invent stories to cover up our preconceptions and hardwired biases.
Read the books of Sam Harris on Free Will. Again, he is a mainstream writer, who documents why Free Will is a complete illusion. Who cares!
The reason we don't care is that we humans are hardwired to enjoy each other's hardwired character. We love to watch “character in conflict” in the movies and TV (and in political races). But we’re not hardwired to be interested in the reasons behind character type differences. Why is that guy in the movie a psychopath? Who cares! Boring!
So we're ignorant to the real story. If Free Will doesn't exist, then we can't hold people accountable for their actions caused by their genetic hardwiring. We can't throw people in jail for their lack of impulse control, or their psychopathology if these traits are innate. Yet the law depends on freedom of choice. If our choices are not free, then the law is simply an artibrary set of rules imposed by one genetic subgroup on another.
The truth is that the minority - the 5% who make all the money - are born with high IQ, high sports ability, high self-confidence, high impulse control, high motivation, whatever. And the rest of us aren't. Most of us are hardwired to serve, in highly specialized, poorly paid, roles like soldiers, followers, etc. Most of us crave to be led.
Like bees, we humans are innately specialized in our role in society. This allows for a division of labor and scalability of society beyond small bands of hunter gatherers. But it's not fair to individuals.
That's the basis for income inequality. Too bad we're not hardwired to see the problem this way, so we propose solutions that doomed to fail over and over and over again.