The quote you are responding to is a reaction to scientific racism. Forgive me if I'm misinterpreting you, but you said that you find it amusing that this is still controversial.
> The quote you are responding to is a reaction to scientific racism.
No, it is a reaction to treating humans the same as finches. You give the thing he does a label and then attack the label, instead of attacking the thing itself.
Isolated populations "drift" genetically, which is how species form in the first place. Discriminating against people based on those differences sucks, sure, but it's still the ground truth.
Pretty sure there are genetic clustering algorithms which show that perceived race groups approximately correspond to measured race clusters. For example, random East Asians are more closely related to each other than to random West Europeans.
