Yes it is a business, but it is a gummint regulated business, and there are rules. Even the airline and the Brit equivalent of the TSA "are looking into it" - meaning they don't think it was right but hell will freeze before they say so.
As for the guy wearing a t-shirt on an international flight, I have one question for all of you - just what the hell do you think personal liberty and freedom means? I can only wear what
you think is appropriate? Bite me. He was asking for it? Right, and cute girls with short skirts get to be raped, right?
If I wanted to wear a Dorothy Lamour outfit (i.e., sarong) on an international flight, I bloody well will.
I expected better from this crowd, lots better.