The arrogance of some people here to say oh you should have researched this. If you go to your accountant do you take his tax advice and then go and do your own research. A certain percentage with financial skills could but for most they take the advice of a trusted advisor.
Walk in someone shoes for a while before you start throwing mud.
Arrogance?
I would think its common sense to ensure that you have a full understanding of how your life savings are being managed and the risks involved, whether its your trusted adviser investing your money, or any other professional.
And it wasn't a complex strategy they needed to understand...just a ridiculously high risk one.