Come now, if someone is peering under a stall door or peeking through the door gaps then it is they who have a problem, not the person on the other side.
Yes I have, and I even suffer a bit of inability to perform bodily functions under certain circumstances. Does that give me the right to demand a completely empty bathroom when I need to pee? Of course not!
If we're going to worry about every obscure phobia and malady then nobody is going to use a restroom, either because of their phobia or because they are afraid of offending someone with a phobia.
People like me with these issues develop coping strategies that work for them, and it is unlikely that a tall woman in the bathroom is going to push someone over the edge.