It's a bit of a sweeping statement.
This does not really apply to everyone does it. My parents are in their 70's and they use photoshop, do web design, send emails, surf the web etc. and they had no comparable tech when they were young. Sometimes I have to teach computer literacy to 20 year old freshers at the university i work at, and they have no idea. Things are much more subjective than this article would suggest.
I am willing to bet everything I own that most people who are "Tech Savvy" enough to be visiting The Reg will still easily assimilate new technology into their old age, and they all have a head start on my parents because they are already using current technology!
Moreover, tech seems to be evolving rather than moving in huge difficult-to-span jumps, and we are evolving with it, even as we age. There would have to be an incredibly major change in technology/human interfaces to cause a future problem for even the less "tech savvy" amongst us. I think that this theory was only half-formed, so I can believe that the researcher involved may struggle with future tech, even if the rest of us don't!