But isn't cryptocurrency so good of an investment that it does not require a store front shop with a snake oil salesman. Why do they make dubious claims like 40% interest. These claims are false and are intended to defraud the public.

Fraud is not just against the law it is against society's best interest. They should stop making dubious claims about their investment and show how good their offering was and leave it at that. That is what other big name cryptos are doing.