Amazon is super evil, but it mostly comes from the way they treat their employees and sellers. The customer service is… okayish, mostly. They certainly have problems there as well, but it’s not the real issue.
I think AA’s issues are like most airlines: greed.
Their folks are friendly. I’ve never had a rep that I was pissed at, whether it was in the plane or at a counter. In fact, I’d say their folks go well above others I’ve ridden with (I’m looking at you Frontier).
I do, however, wish airlines didn’t think the median size if a person is 5’9" weighing in at a buck fifty. They stuff us on top of each other and make sure they maximize revenue by barely having enough planes to cover routes, so they’re always packed.
“Oh, but you can fly first class!” Nah, screw that. Give me a plane with no first class seats and enough leg room so I can move my legs a bit and we can all lean back just 2 more solid inches. The stress levels for everyone would magically improve, packed plane or not.
I’ll start by saying I agree with all your points. And I wasn’t able to find info about the median height, but the average height of American men is actually 5’9. Which including women would bring it down quite a bit. That said, as a 5’7 shorty, I hate the small space in seats. Based on your post I’m guessing your height is around 6’2" (I must know if I’m close!), so you truly have my sympathy sitting in those sardine can aluminum tubes.