As the Vietnamese opened up for a life with the rest of the world, maybe we should follow their example. I don't think anybody on this forum gave an order to drop a napalm bomb. No reason to discuss every detail of the Vietnam war and then the details of British colonialism etc.
As I said in my former post I don't see any connection between what happened there and present-day behavior of Thai girls. It's been 40 years. And Thailand went through a lot in those years. Imperialism, the opening of a new market for western products, does have much more impact on Thai girls today.