They have not reached their position through reason, so reason cannot be used to dislodge them from it. Entertaining their chauvinism as if it merits rational debate only legitimises their position by pretending it is worthy of serious consideration. It is not. It should be called what it is: shameful.
Frankly, I am shocked that someone would publish such views under their real name. It suggests they may not fully grasp the gravity of what they have said. Are they aware that such comments render them unemployable in much of the developed world? That they risk being rightly shunned by the vast majority of people?