Why go to the extremes? I’m sure most that learn by doing would be able to repeat off the skills etc after viewing something multiple times. However, that does not translate into them having actually learned the fight. where you might need only a run or two after viewing said video they might need more repetition while doing to actually learn the fight because what the video didn’t translate into the actual learned skill. Most things in life are not simply black and white, but are shades of gray.
Also, if that person does have a disability they have every right to play the game( the service) they pay to utilize. PF is great away to limit exposure to players you don’t want to encounter.