you are able to enjoy the game because you only have to try and beat the boss twenty times before eeking out that difficulty. a disabled player could have to take a thousand to infinity number of tries and even if it's only a hundred or two hundred more than a "normal" player they're still fundamentally having a different experience than you. you are drip-fed dopamine in a way you enjoy because the game takes just enough attempts at each challenge to make it very rewarding. if it takes too many extra attempts than it becomes unrewarding no matter what the experience is supposed to be or even how much willpower you have.

trying to beat the same boss over a thousand times just becomes actual, present real life mental suffering someone would only go through if they were forced to, no matter how close they were to the enlightened dark souls mindset