This shows a little bit the ignorance of the state, it has always surprised me that they are chasing all this and they are not chasing Lighting, because the easiest way to introduce stolen bitcoins, or bitcoins coming from a coinjoin or marked, is to use lightning, the exchange will never know where they come from. Lightning used well is a perfect washing machine, and increases almost to perfection the fungibility of bitcoin. And the best thing is that there is nothing you can do to stop it.