The jacket is in the way
This woman boarded her flight, found her seat, removed her coat, draped it over the back of her seat, and then took up residence. Most people would have noticed the blunder at some point during that sequence. How are you supposed to watch TV when your jacket blocks the view?
Unfortunately, she never understood what was going on. Or maybe she just refused to take her jacket off even though it obstructed this person’s screen. Some individuals do not deserve the pleasure of flying in an airplane.