That does not seem relevant to this article, because it does not call the system illegal. It calls it "effectively a Ponzi scheme", and then goes on to offer ev

That does not seem relevant to this article, because it does not call the system illegal. It calls it "effectively a Ponzi scheme", and then goes on to offer evidence to support that claim. A Ponzi scheme is "an investment system where the investment profits are paid with the money from other investors, and those who experience profit believe the profits come from non-investors such as business activities, or the earnings and growth of a company." (Wikipedia) The author makes a clear attempt at analogy: "Debt-financed prosperity is typically abetted by central banks that encourage consumers and speculators to borrow (the demand side of Ponzi finance) and also encourage yield-seeking demand among investors for newly-issued debt securities that offer a “pickup” in yield (the supply side of Ponzi finance)."