I'm not sure why you believe that. There's an incredible amount of work that remains and innovation happens over decades. There's certainly a lot of room for improvement.
We are entering that age because tech is addressing issues like this and has made life easier for the paraplegic man.
I'm not sure it's made life easier for him yet. He walked 3.5 metres, but how frustrating would it be to lose the use of your legs and then be tantalized by something sort-of-like walking again, but within very controlled situations? But the promise of what's to come is fantastic - my dad's a lifelong paraplegic due to polio and although this tech is too late for him, it's wonderful to think others may have a chance.
This age won't come anytime soon in a world where hundreds of billions $ of capital are thrown into social-media-mobile-app economy.
So, umm, how is it exactly that you found out this exciting news about this and other medical breakthroughs? We could be doing a lot more medical research and a lot less social networking. We could also be doing a lot less medical research and a lot more other things. Those statements are always true and almost never useful.
Last I checked healthcare R&D outspends VC by about 3:1 in the US.