If you look at the African American pop, it looks like pop density is a contributing factors also explains why high density countries had so many pornstars that looked masculine until their government got involved. Asian countries are an example of authoritarian governments trying to influence sexual preference and now child abuse material is a huge problem. I worry that trying to overcome the rat utopia problem with social intervention is a mistake and the increase of pfos/pfas/genx has dropped testosterone reducing/removing the hyper aggressive leaving just the pretty ones.
Tldr: the late snake will adopt female techniques to extract heat from males giving them a better "fitness" in the mating ball