The author says exactly that in the essay, that if they could get a crab chair tomorrow they would be the first in line.
His point is that these sorts of designs are never going to be practical and that he wishes they would put some of this energy into designing the practical next steps for mobility assistance, that focus on the things the community actually needs.
His point is that these sorts of designs are never going to be practical and that he wishes they would put some of this energy into designing the practical next steps for mobility assistance, that focus on the things the community actually needs.