I am not sure how exactly you have come to this conclusion.
Satoshi has always tried to remain hidden. When Gavin went to the CIA, then Satoshi instantly stopped and sent this email (tldr: I've moved on to other things.".
Satoshi sent this email on Apr 23, 2011.
Since then, we have no clue about his whereabouts. So, does he really give you the impression of a guy that would show up?
Let's say he does. Let's say he moves his coins and tries to sell them.
Where would he do that? In a CEX?
You know that the authorities will contact the CEX instantly and they will freeze the coins, until they are done with inspecting Satoshi (the real person).