Even if we agree that the Lazlo the bitcoin pizza guy doesn't know that bitcoin will value much. How about syrus who is said to be working closely with Satoshi. He should also know the value of bitcoin.
I think on the contrary, Syrus and even Satoshi cannot know anything about the future of Bitcoin at all. They created bitcoin with the sole purpose of creating an alternative to fiat, but they couldn't tell if people would accept it or not. At that point, all they can do is set expectations and hope everyone will think the same way they do and accept it. Bitcoin is decentralized, it goes against the government's stance. I think Satoshi partly predicted that the government would not easily accept bitcoin, so he chose to remain anonymous forever.
