I suppose I'm probably not eligible to comment on this thread as my experience with those TSA goons is extremely limited.
I flew to Ontario. Calif. a couple of years ago from our tiny Podunk airport to see my grandson graduate. On this end, I put my flip-flops and purse in a tub and it went through the scanner thingy, no problems, no big deal.
When I left from Ontario to come home, I had requested a wheel chair as my hiking long walks in airports ability ain't great. It worked perfectly and I was greeted at the first check-in counter by a nice guy and the chair. When we got to the Big Time check through place, I had to get out of the chair so that they could up-end the chair and check out the bottom of it (for bombs, or whatever, I guess).
I don't know to whom the chair belonged, the airline or the airport, but it was totally supervised by them and their "driver" before I ever sat down in it.
I thought this might have been kinda sorta ridiculous. Just when, with their guy driving me, might I have added explosives or weapons or whatever to the bottom of it? Well, at least they didn't feel me up. I'm still wondering if this old woman missed a treat?