From my observations, walkable neighbourhoods can be great for disabled people. I live in a very walkable neighbourhood where there are many homes, businesses, schools, and more in walking distance, as well as bus lines and a subway station. Everything within 10 minutes at a normal pace. There is a home for people in wheelchairs (not sure of the correct term) down the street from me, and the people that live there are always out and about. Same with a man in a wheelchair that lives one street over. Same with the slow, tiny, 90-something-year-old lady that lives across the street from me. Same with the blind man who lives down the street. None of these people have to drive, and I believe none of them even own cars, but they are able to get around with little issue because they have the option to just jaunt down the sidewalk 10 minutes for most things, or use accessible transit connections for longer trips.