crypto currency can be accessed by anyone anywhere and by anyone whether the results of the crypto currency are bad depending on the intention and purpose of the investor itself if indeed the crypto currency is used as a means of money laundering means that the initial goal of that person is not good harm others, of course
Now a days we do not need any tool for money laundering. We can use bitcoin for this purpose. Even there are privacy currencies like XMR where trasncations cannot be traced. So this is one bad usage of digital currency and we should look on how it can be avoided.