Evolutionary psychology is the generally the domain of people who know nothing about evolution beyond a high school level (e.g. psychologists). It doesn't incorporate modern ideas about evolution from the biological sciences - what about genetic drift? Gene flow? Multi-level selection? Non-genetic inheritance? Basically, it involves individuals coming up with 'fun' sounding rationalizations for their pet theories based on an unfalsifiable appeal to 'natural selection' and 'fitness'. These theories are not even based on attempts to perform mathematical modelling of evolutionary trajectories, which is what evolutionary biologists would do (even if these simplistic models are no doubt flawed themselves).

Evolution, especially that of human behavior, is far more complicated that these evolutionary psychology 'theories' would have it, and in my opinion beyond the ability of any human to properly comprehend due to its extreme complexity involving so many variables, most of which could never even be measured properly. It is the domain of God.

There are other, far better, uses of our rational minds than arguments based on 'evolutionary psychology'.

ps. 'Briffault's Law' is also flawed when applied to humans. Even a casual observer of humans would observe that throughout history, unlike animals such as birds, it is the human females, not human males that seek to attract male attention by improving their appearance using makeup and clothes, seductive dancing etc. This clearly indicates females are competing amongst themselves to be chosen by their preferred males. These males are determining whether and with what females to associate with. To put it another way, how is the 80/20 rule and ideas surrounding 'Chad' consistent with Briffault's Law? Chad, a male, is obviously choosing which females to associate with. None of this means that males don't also have to compete amongst themselves to associate with their preferred females, but simply that your simplistic "Briffault's Law" does not apply to humans.