I really don't like most of the TSA's procedures either, but watching the hidden camera video, it seems like the OP went in to the situation expecting to have an issue with the TSA. If you approach the TSA adversarially, it's logical that they'd respond unpleasantly.
OP: In a patronizing tone: "You're required to accept it, and to screen it. You have the means available to screen it, namely xray and explosive trace detection"
OP: In a patronizing tone: "You're required to accept it, and to screen it. You have the means available to screen it, namely xray and explosive trace detection"
TSA: "Sir, where are you going?"
OP: "That's none of your business"