He also does not like IT hype companies, and missed several boats if you will - but his strategy is still successful. I like his value approach in an ever crazier world
That does not make Mr. Buffet a dinosaur. It is simply not part of his strategy. Railroads, ketchup etc. yes; Bitcoin and Facebook no.
http://www.fool.com/investing/general/2014/01/27/why-warren-buffett-would-never-buy-facebook.aspx
In that 2001 letter, Buffett said: "At Berkshire, we make no attempt to pick the few winners that will emerge from an ocean of unproven enterprises. We're not smart enough to do that, and we know it."
IMHO a bitcoin millionaire would be well advised to diversify into his Berkshire shares, and Mr. Buffett may be well advised to invest a little bit into cryptocurrency. Not a coin directly but into adoption.
Bitcoin is a long term investment. Not a short term investment.