Vitalik Buterin has met him in person...
More info will come out on Szabo now - he is barely a "real" person himself, slightly more transparent than Satoshi, but, not by that much.
This is where I saw the claims that Nick Szabo is already 85 years of age:
Nick Szabo the one born in 1930, graduate of UC Berkeley, resident of Silicon Valley (Cupertino), employed at Lockheed, Link-Singer, and KLA,
http://www.faireconomy.org/files/pdf/notalonereportfinal.pdf
Also, how can you say that Nick Szabo is not 85 when there are so many uncertainties regarding his identity? There are even no known picture of him in the internet.
OK guys, I took a few moments looking at that faireconomy PDF. Definitely NOT the Nick Szabo/Satoshi Nakamoto we are looking for!! That PDF is by a leftist, statist organization preaching socialism/communism, which is about as far as you can get from libertarian, free-market principles of Bitcoin and cryptocurrency developers in general. So the 85-year old socialist is definitely not the Nick Szabo of interest.