This is from the point of view that money laundering as a law is essentially thoughtcrime. The police state has done an orwellian job of normalizing not privacy, but instead telling the government the reason you are doing every transaction. Then, any attempt to not tell the government is "money laundering".
Of course, if you are the state, the powers of this tool are alluring. Imagine if the state could compel citizens to write down what they're thinking, and compel justifications for everything they do in life. Think of how many crimes we could solve! Think of how many bad folks we can catch ahead of time!