The news reports on this switch are all over the place in terms of quality, and you happened to pick one of the worse ones. I'm not the only one asking these questions: http://www.cnn.com/2013/05/29/travel/tsa-backscatter
"We'd like to see clearer rules about the collection of the images," Rotenberg said. "Are they deleted? Are they saved? Is some analysis being done and can they be linked to passengers?"
Not to mention the enormous waste of money it must have been to install and then remove the old machines. And what now happens to all the pictures they took, which are probably accumulating dust on some DHS subcontractor's hard disk somewhere in America?