Some people on the other hand expect the world to cater to them and therefore are idiots.
I'm 6'5" and my knees are hard against the upright seat back. When I try to put my legs under the seat like you suggest, my shins hit the seat bottom before they extend at all. Net gains of zero. So I guess that makes me an idiot, huh?
So you have a height handicap, and you want society to give you special consideration as such. I suppose that's a fair request.
Why don't you write your congressman and request action to help height-challenged travelers get the special assistance they require.