It seems to happen in a lot of the bigger airports. I've noticed that a lot of posts against TSA center around major hubs.
Maybe policies in these places are made to make things quicker and easier for the TSA staff, not taking into consideration that passenger may not like it, then again they have 30min to 1 hr waits. Again, I can't say for sure since I have no real idea how these airports run, which is pretty sad in an agency thats supposed to be consistent across the board.
"I think it's something in the culture of the agency (top-down) that makes certain people act like this."
You proably are right. I know are management at my airport when it first rolled out was constantly there briefing us on how we were doing the country a great service, etc.. It would honestly hype up a lot of the screeners and if they had people question them, they got honestly upset, including myself for a time.
But slowly since the roll out the management has pretty much stayed alway from the airport and really hasn't said much to us the screeners. If they have something they want us to know, it's usually delivered by a screening manager.
Stuff thats usually said through someone else, is either going to come across wrong or be said with a lot of suger on top of it. We don't usually get pats on the back like we used to, instead we get grief.
And it's caused a lot of screeners to take a real look around them and see that TSA isn't what it's supposed to be. A lot are applying for different jobs outside the TSA, or just quitting altogether to get alway from it.
But this might just be my airport, and maybe the bigger airports have management more involved because it can't afford to be out of the loop like some of ours is. And with it might come a attitude that some of the screeners are superior to the passengers.
This is just a idea really though.