<< If you are not free to be stupid you are not free at all.>>
I'd say that's a pretty doctrinaire and overly simplistic statement.
The fundamental freedoms that people have fought and died for were things like freedom of speech, freedom of religion, freedom of association, etc. Freedom to be fleeced by Wall Street con artists is not usually included in those freedoms.
I think the country has recently abandoned (to the Patriot Act) the freedom to talk on the phone to anyone without fear of warrantless government snooping, the freedom to take out library books without fear of warrantless government snooping into your reading habits, etc. They raised no fuss at all. They sucked it up. Somehow, plane, my gut feeling is that they could also give up the Freedom to Be Fleeced by Wall Street Crooks, an obscure and little-appreciated freedom that up to now nobody has given as an example of the kind of freedom that he was willing to die for.
Your stirring defence of the right to be stupid was pithy and catchy, but doesn't make a hell of a lot of sense when you think about it. It's certainly one of the minor freedoms, many of which have all been cheerfully sacrificed without anyone feeling less free afterwards.