I agree that the concept product space is exciting and important. It is good to see people and companies explore these spaces and ideas. Sure lets build and play with these things.

The criticism that is levied on these things is not that they exist but that despite the glitz and shine they are not going to help today. 20 years is a long time to wait for your fancy mobility device.

I have seen countless concepts that never see in the real world. 100 mpg cars, stair climbing wheel chairs, exoskeletons etc. I am watching for thing that I can afford and use now.