No, it's just that the folks railing against it sound like sour grapes. If you want to pick a convincing analogy, do so. Calling it a Ponzi scheme doesn't fit

No, it's just that the folks railing against it sound like sour grapes. If you want to pick a convincing analogy, do so. Calling it a Ponzi scheme doesn't fit and makes it sound like you're more interested in being contrarian than making a substantive point.