About the only good thing about reckless misuse of the word "Ponzi" is that it advertises the speaker as an idiot whose opinion can safely be ignored.

A Ponzi is a scheme that pays new "investors" out of funds from older investors, generally with some implausible cover story portraying it as a legitimate investment.  That's all it is.  It isn't just a word that means any financial anything that the speaker finds shady for some reason.  Used that way, what it means is "I am an idiot."