While that is a facile and superficial remark it has no bearing on what Quigley was referring to. He was speaking of military invasions. And these are not even “Conquistadors” in any sense anyway. The Conquistadors were totally military forces.
The goal of the original Conquistadores was conquest and enslavement.
The goal of the New Conquistadores is conquest and enslavement; they are just being a little more subtle about it.