I hate people like that. Why must he build himself up by putting down others? Regardless of what you think of the TSA's procedures, the people in the airport don't make the law. They're just decent people trying to make a living. If you have to insult them, albeit only to yourself, just to opt out of a scan you're probably the one who needs replaced by a robot.
It's not bad to want to uphold travel safety or to take a job doing so. You might disagree with whether or not these scanners accomplish that, or if they do, if it's worth the tradeoff, and so might the TSA agent. That doesn't make the TSA agent less deserving of respect as a person.