It's a smokescreen in the case of this attack. But it also sets an important precedent. Because high profile accounts have been hit by this dusting attack, lowe

It's a smokescreen in the case of this attack. But it also sets an important precedent. Because high profile accounts have been hit by this dusting attack, lower profile victims that got hit by the same attack are now much more easily going to be able to use this as a defense in court. If this hadn't happened to such high profile people, someone in court might be trying to say things like "look, I know my address is on the sanctioned list for money laundering but that's because someone I didn't know paid me", and the judge is going to be skeptical and say "I don't understand this blockchain stuff, but the software from <trusted sanctions partner> says you are guilty of sanctions violations."