Traditional marriage of 2 young couple is a fine strategg for when the percentage of males is similar to that of females.

Polygyny works better when it's the elites that have it or when the female percentage is bigger than the male.

And, yes, you are correct that the male nature is polygynic, but so is the female satanic nature hypergamic, and we know their nature leads to decay.

Btw kindly tell princess Peach I mean Erika to take my DMs