Whatever you've been smoking, I want some of it. TSA in all of the places in the US that I've flown through are some of the nastiest wannabe bullies I've ever had the misfortune to meet. Yes, they're courteous until they find or imagine the tiniest reason not to be. Maybe you don't look right, or your passport has the wrong stamp in it? Or you have 6 weeks' worth of personal medication with you, what, are you a drug dealer? Oops.
That was like 15 years ago. I'd rather not imagine how it is now, I took the USA off my travel destination list when the Rump got elected for the first time.
Sounds like you have a bit of unconscious bias goi g on there.