Earlier quoted context omitted.
The only problem is that Satoshi's coins are watched like a hawk. Satoshi can't liquidate any of them, or even really move them without causing an immediate reaction in the community. Exchanges might halt trading, whilst it would immediately give away his or her identity. If the price of bitcoin doesn't crash following a coin movement, Satoshi's life is most certainly at risk. If it does, then the coins are worth not…
Satoshi is almost certainly dead. No living person could resist the temptation to talk about their creation of a 100 billion dollar phenomenon. Two plausible candidates who died at about the right time are Hal Finney and Dave Kleiman.
This is a very strong claim, with precious little evidence. If you think this is impossible, you haven't met enough different kinds of people.