Personally I think these virile men will end up just like us as is the case at the fall of the Roman empire up till now. Probably faster due to technology accelerating and copes becoming advanced dopamine releasers. Hundreds of years ago there really wasn't much to do besides mating other than scholar, monk, or alchoholmaxxing.
Then the study either concludes such is due to males having a lower chance to be carried to term or a poor, low status mother is likely to be around poor, low status men