“I cant help but think having to handle an animal while traveling, especially on a plane, would do nothing but add stress.”
That’s probably because you’re a normal, responsible person who doesn’t expect the world to take care of you. You’d probably be worried about getting your animal out to some grass or something so they could do your business. A lot of these people with “support” animals just seem to let them do their business wherever they want and let others clean up after them. Life’s easy and stress-free when you don’t worry about anything and let other people do all the work.