I am not saying at all that anybody should be charged with anything, AFAIC anybody should be able to do whatever they want, money laundering is a nonsensical idea in the first place, however bitcoin is money.
Bitcoin is money because that is its only function. It is not a commodity, *bitcoin has no intrinsic value*, which means that outside of its use as money it has no other uses. It is used to transfer, store, account for value. It is as pure money as it gets, however because it has no intrinsic value at all (it cannot be used for anything outside of money, nobody needs it for anything but for its quality of being money) its ability to store value is questionable.
On a side note bitcoin is money and currency at the same time, that's because it is money that is also very easy to exchange and transfer from person to person.
Gold is money but it was not a very good currency (until recently), which is why people carried paper notes around to exchange quantities of gold (money). Currency is what circulates around, money is what stores value, can be traded/exchanged, can be used for accounting.
Modern technology makes gold, which is money also into currency, makes it extremely easy to use as currency without introducing any other medium of exchange to replace gold. Modern tech allows gold to be currency instead of having paper currency representing amounts of gold.
The judge in this case doesn't understand money or currency but at least he didn't use his lack of understanding to convict somebody on something that is not a crime AFAIC at all.