If you're blind you can fly, if you're deaf you can fly, if you can't speak or speak the language you can fly, if you're diabetic you can fly, if you're mentally retarted you can fly. I could go on and on. How many of you have seen people with handicaps fly? Isn't there a rule about being able to fly if you can manage your own personal needs? Hey I'll throw this one out to you---how many of you have boarded people with known dementia?? I know the spelling is probably wrong, but how about the other "old" disease? How many of you have helped find confused and lost older people in the airports??
I really think this guy has a case.
FA's are required to brief "special" passengers on what they need to do in the event of an emergency. Each briefing is personal and unique to the passenger's disability. Many traveler’s have someone who travels with them to assist them with their needs, including potential emergency evacuations.
A blind person is told where the nearest exists are and how many rows away they are. Similar to learning where to get off an elevator based on the number of beeps it makes as it travels between floors. They are also advised to wait just a few seconds to let the majority of folks get off so they don't get trampled on the way out.
Deaf people can see where the exits are, they just need to be informed that an emergency is in progress or anticipated.
Paralyzed people or people with amputated legs who have the arm strength to pull themselves out are also advised to wait a few seconds and then try and make their way to an exit. The problem comes when they lack the arm strength or ability to attempt to get out of the plane.
In all of the scenarios, flight attendants tell the "special" passengers that the flight attendants will attempt to get to them after the plane is evacuated and the flight attendants can get to wherever the passengers may still be in the cabin. However, the flight attendants may be incapacited, the cabin may be broken or the flight attendant's feel in imminent danger and also evacuate, so the passengers need to at least have the capacity, either alone or with an assistant, to attempt to evacuate without help from the crew.
I don't know what happened at the gate, nor do I know the person's actual capacity to assist with his own evacuation. However, unless proved otherwise, I support the GA's decision to deny boarding if it was believed that person could not assist himself and/or presented a potential problem to other passengers.