If Dr. Wright is indeed taking us for a ride, he doesn't seem worried that the "real" Satoshi won't come out and expose him as a fraud (like he did a few years ago with Dorian Nakamoto). Although the circumstances were different then, the chances of this happening are absolutely non-zero, and it could happen at any time. Why continue pushing the issue and drawing attention, which only adds to the risk of this happening?
I'm not saying at all that this is indicative that Dr. Wright is Satoshi, but IMO it's definitely interesting.