I think grandparent comment's point was that at some point, greater good for disabled people can be delivered by specifically helping them rather than re-engine

I think grandparent comment's point was that at some point, greater good for disabled people can be delivered by specifically helping them rather than re-engineering the world to fit them. Considering that each has a concrete price tag attached to it. The "wheelchair that can climb stairs" vs "adding ramps everywhere" comparison. I feel like in the past the latter made more economic sense, but at some point technology might tip the balance the other way.