I'm not a money laundering criminal and I don't think it's fair to say that anyone who uses out of band money transfer services is automatically doing it for nefarious purposes.
No one is a money laundering criminal. There are just a bunch of a clowns in suits & blouses who say people are criminals.
It doesn't matter if we use it for whatever a nefarious purpose is. If some clown in a suit or a blouse says it's nefarious then it's apparently nefarious.
I use BTC because I want to beat that system. The opinions of clowns will never affect how I use my BTC