More often than not, it gets mixed in with evolutionary psychology – the idea that men and women act a specific way because of evolution.According to the standard script, women are attracted to “alphas” because they are looking for prime genetic material who can also protect and provide for them, thus ensuring the continuation of their genetic line.
Evolutionary psychology is frequently used to justify certain behaviors in men and women, insisting that certain behaviors are not only natural but inevitable and thus are the way that things are supposed to be.
Such is the case of the worship of the alpha male: an attempt by people to justify what they to be true via an appeal to nature through misunderstandings of evolution, psychology and sociological development.
The betas subsist on the scraps that are left over once the alpha has moved on and are excluded from sex with any of the females on threat of death.
The alpha alone gets to pass along his genes; many apes – chimps and gorillas especially – will outright mating patterns (humans, after all, are just hairless apes), the idea is that women are naturally attracted to alpha males – dominant, powerful, high-status men – while disdaining the weaker, less dominant betas.
The current standard narrative simplified is that sperm is metaphorically cheap while eggs are metaphorically expensive.