The real question that gets billions invested is "Is it useful?".
If the "con artist" solves my problem, that's fine by me. It is like having a mentalist tell me "I see that you are having a leaky faucet and I see your future in a hardware store buying a 25mm gasket and teflon tape...". In the end, I will have my leak fixed and that's what I wanted, who care how it got to it?