This is very true. Because of the anonymous nature of cryptocurrencies, people can easily transfer it to settle illegal deals. This is one of the reasons most governments don't want to allow it and as such the central banks will likely continue to kick against it.
That is the worst they can do about cryptocurrency, create FUDS for it, threatening users and many more, but technologically , there is nothing they can do about it as no matter what they do, it will not make satoshi or other blockchian companies close down the blockchian.
I am sure this is one of the reasons why satoshi still would not disclose himself ever so that they will not force him into shutting down the bitcoin system which is why Craig must be careful, because when its gets deeper and government invites him, he will have no excuse to give that he doesnt have the source code.