I really don't understand the money laundering argument for cryptocurrency. At the end of the day, the person has to cash out via fiat which if the value is over x will automatically trigger most financial institutions to report to AML authorities. It doesn't matter if it is cash or crypto it is the same result. In both cases the person will need have to prove why they received such a large sum of money and what is the source.
Fears overblown, in my opinion.
RE: G20: Presumably No Global Regulations Of Bitcoin And Cryptocurrencies