I don't buy it. Yeah, Satoshi owns a stack. But if he sold out, the price would drop so hard it'd make your head spin... and I doubt Satoshi would be able to be rid of all of them in time before they bottom out. The market isn't large enough yet to pull that sort of scheme off.
Now, Bitcoin still seems like a good idea, with an implementation that seems to have some issues, and rampant speculation is going to stop the better ideas that it could embody from happening for a while. But a "Ponzi scheme"? Done deliberately for that reason? You're telling me that Satoshi knew it'd hit $1k per BTC? Pfft.