I see why you would think he was saying otherwise, but I've followed the killer bee guy on facebook, and have seen it in context. The thing, is, killer bees don't always build in the open. They can survive the winter, and when they invade, they quickly take over. They are a much more efficient pollen gatherer, leaving less resources for the 'domestic' hives.
So, if he was suggesting to simply assume every feral swarm in the 48 states was Africanized, and to exterminate it, it was about management of the killer swarms, which will surely get out of hand without it.
The honey bee is not indigenous to America. They were brought over by Europeans, and most honey bees are actually managed. So eliminating the feral swarms will do little to affect the population of managed hives.
So, disagree or not, the killer bees are here, and are now endemic.