Disabilities are not binary; it's not perfect health VS quadriplegic.
For some people, it's just harder to do everyday things. It doesn't mean they can't move around. And for people getting older or with a degenerative disease, continuing to do things normally is also a matter of pride.
To put it in obvious terms, it's like saying that we can add 3-4 stairs at the main entrance, because anybody who don't like stair can enter via the damp alleyway in the back, besides the dumpsters.
For some people, it's just harder to do everyday things. It doesn't mean they can't move around. And for people getting older or with a degenerative disease, continuing to do things normally is also a matter of pride.
To put it in obvious terms, it's like saying that we can add 3-4 stairs at the main entrance, because anybody who don't like stair can enter via the damp alleyway in the back, besides the dumpsters.