No need for ad hominems. This suffices to place doubt on the article's premises (and therefore any conclusion):

>> This hasn’t been strictly shown mathematically, but I think it is true.

> Emil Kirkegaard is a self-described white nationalist

That's simply a lie.

> who thinks the age of consent is too high

Too high in which country? Such laws vary strongly, even by US state, and he is from Denmark. Anyway, this has nothing to do with the topic at hand.

In Spain used to be as low as 13 a few decades ago; but that law was obviously written before the rural exodus of inner Spain into the cities (from the 60's to almost the 80's), as children since early puberty got to work/help in the farm/fields or at home and by age 14 they had far more duties and accountabilities than today. And yes, that yielded more maturity.

Thus, the law had to be fixed for more urban/civilized times up to 16. Altough depending on the age/mentality closeness (such as 15-19 as it happened with a recent case), the young adult had its charges totally dropped.