Maybe so, but there was another article not long ago talking about how, while originally bitcoin was expected to act like gold - ie go up when people worried about the stability of the financial system, what happened instead is that it's basically just correlated with the stock market. So in that light, the GP comment is useful context. Even if you think that long term it's a pyramid scheme, its short term performance is basically explained by the stock market, and is not evidence of the scheme unravelling, or whatever you might call it