You are not an asshole for opting out. If I see someone opting out at an airport they will get a silent nod of approbation. It is extremely easy and does not hold anyone else up. If anything it holds you up more - this is the case with naked scanner opt-outs, where you step aside and the people behind you can thank you for there being one less person in front of them on the way to get their junk photographed.
Furthermore, the TSA scanners use a hi res stereoscopic camera to take a 3D photo of your facial features. It's not the same as your passport photo or a regular CCTV camera
Furthermore, the TSA scanners use a hi res stereoscopic camera to take a 3D photo of your facial features. It's not the same as your passport photo or a regular CCTV camera