Also you can’t sit there if you require or request a seatbelt extension. IIRC
Believe it or not, at my airline we had a one armed guy who took a seat in the emergency exit row and insisted he COULD open the door - WHICH TAKES TWO ARMS AND HANDS. He was made to move. Of course.
I believe he was going to sue - something something discrimination against disabled people, blah blah blah.