It's interesting that you can fly without ID ( airlines in the UK closed that hole years ago to prevent ticket resale ) but I'm confused why that led to additio

It's interesting that you can fly without ID ( airlines in the UK closed that hole years ago to prevent ticket resale ) but I'm confused why that led to additional pat-down scrutiny. Surely the thoroughness physical screening should be orthogonal to identity? Otherwise it suggests that someone who does have ID to fly receives less scrutiny, which is a security vulnerability. To invert: everyone boarding an aircraft should be physically screened to the same extent.