@Pain66 I remember that study. It seems to check out until you ask what age the mother is.

In western societies, large age gaps are taboo, so the father's age is a proxy variable for the mother's age. 55 year old fathers are mostly having children with 35 year old women, not 19 year olds.

So it's really just an exercise in academic gymnastics to report what we already know, but put the blame on men.