I've never had this response simply in response to opting out, but I've had plenty of TSO's get cranky (e.g. "hold your horses, buddy", "chill out", "take it easy") when I opt out and start asserting myself over seeing my stuff and getting clean gloves and the like.

I also had a barker get in my face once and call me a "troublemaker" because I had the audacity to politely and quietly ask him not to shout at me.

They say this stuff because they're accustomed to receiving total acquiescence from 95% of passengers... it just blows my mind how most people just keep their heads down and allow themselves to be yelled at and then degraded in the nudiescope.