It states it well.
I am not interested in the author's other views.
The fellow you link to is, to be nice, a bit eccentric.
(And of most importance, not correct in his assertions of fact).
This issue is not like evolution or other matters. It observed and clear cut.
There is no reason to argue about it.
You mistake these obvious facts about biology with the greater questions of race that are social and poltical.
Now in light of your refusal to acknowledge any other scientific data other than that which suits you, who's being political here concerning this issue?
I have made no political or social generalizations on this subject other than to attribute them to culture and geography more so than to race.