We don't even know that this was an interrogation process. If these folks had information we badly needed, I hardly believe doing naked pyramids would be the method of interrogation.
No, your point is quite clear. You're unable to discern between the hundreds of thousands of honorable troops in the field, and these 7 dishonorable ones. And sadly, by adopting the argument as you have you do more to smear the remainder of our troops than to simply admit that this was an aberration - and an improper one at that...