Well DPR did say he went on to create an economic simulation in his social media account.
To that end, I am creating an economic simulation to give people a first-hand experience of what it would be like to live in a world without the systemic use of force."
It would have been pretty hard to know or get involved with bitcoin in the early stages. I think it would have been spread to close friends of Satoshi, which undoubtedly could be one of themselves. It was some time after that it was posted to a cryptography BBS.
i think that conclusion makes the most sense with what we know at this point. it was launched in february 2011 though, about 2 years after bitcoin's inception.