It seems this dude is no longer a "moderate". Here, he goes all fringe, claiming that the Olmecs and other high cultures in pre-Columbian America had a selective breeding program featuring archaic species of humans (Neandertals, Denisovans, etc). The result was deformed Homo sapiens, who were venerated as gods or turned into rulers.
Oookay.
But sure, this *can* be empirically tested. Just show us the Neandertal and Denisovan DNA in Olmec skeletons. It has to be at least 50%. Or even 100%.
Won´t happen, of course. Next question!