I have more principled qualms about them, too.

One more outlandish problem I have with them is that I have absolutely no guarantee that they actually don't use those cameras that "see through clothing", or rather do not register the clothes at all. (It is not a serious concern actually, but it is a possibility and useful as a rhetoric device. )

Also, I implore all people who claim not to have anything to hide to shed off their fabrics and embrace total freedom. Let's see who really has nothing to hide.