This is an important distinction because a game is much more rich and complex than a book, and has many more axes where things can change. I fathom that for some people the level of punishment is just too much, and maybe that flies in the face of how do they enjoy the game.
This is not to detract from the artistic vision of the creators, given art has a meaning imbued by its maker, and a meaning bestowed by its consumer, i think that having the /option/ to change something that a player can't enjoy is always a plus.
Not all ability or disability is on the body, as some may lie on the mind, whether it is because of a persistent problem, a bad time in your life, or just constraints.
Gatekeeping things like this is, IMO, a bad pick (assuming that they would be properly implemented and tucked away under several menus, not shoved down your throat or made default).