I am still waiting for an alternatice theory that explains the phenomenon.
gypsies are an anomaly, they seem to be the only humanoid culture which naturally developed that accepts rape between siblings as reasonable, doesnt enforce marriage and so on
do gypsies take care of their parents?
now to the point
your hormonal balance depends on your environment, the most extreme examples in the animal kingdom include stuff like frogs changing their sex or a bee morphing into queen-bees when no other queen-bee is there to suppress those hormones with their pheromones
in humans things like food, stress and lifestyle in general will influence your hormonal balance, of course theres shit like hormones in the water & birth control pills now too. generally it is to be expected that kids growing up in a very stressfull environment mature earlier. while some races are clearly more hairy then others turks/greeks vs asians for instance
of course some races have a different natural hormonal level too (asians have less T, niggers have more E)
then testosterone is under attack by (((the usual suspects))), a european boy of 14 from 100 years ago would look more like a man than a 14 year old boy today
genetic differences between the races do exist, and childbearing age being fully independent of these is unrealistic, but to claim that any human race is based on r-type reproduction is a stretch, all natural human cultures ever
(excepts gypsies apparently, lol) invest a great amount of labor into their children, even over a decade after birth, more than every other known species
with a slightly different culture whites could (and did up until very recently) outbreed every other race, thus the cultural factor holds far greater weight than the genetic difference