Not really, at least not from the article you cited: according to an academic who's cited by a World Bank economist in one report there are such things as "naturally occurring ponzi schemes". I'm not sure I'd take Shiller's view of "financial bubbles that form without the manipulator’s baton but from finished natural market forces and with one person’s expectations feeding into another’s" and extrapolate from that that Basu's employer considers Bitcoin to be a naturally occurring ponzi. Heck, I'm not sure I'd even extrapolate as far as saying that the World Bank agree with Shiller (about financial bubbles) - I'd want to research that further before making that claim.