I live in Canada’s Texas, so the following anecdote isn’t necessarily surprising: I was once directed into a security line behind a man with rings on every finger and an enormous belt buckle. There is no possible way he could have not known that he would be passing through a metal detector, which just seems like he was asking for trouble not just for him, but for everyone behind him. The best thing to do is, of course, be very patient; everyone around you is just as irritated at that one person.
Michael Lopp’s routine is the practiced obsessive procedure of someone who travels a lot, particularly for business. I do not fly nearly as often. But I follow similar patterns because it makes everything better not just for me, but also for the people behind me in every inevitable line.