I think laundering is the wrong term. You are right that obviously you need to launder it, now matter the currency. But the path of the money is easier to conce

I think laundering is the wrong term. You are right that obviously you need to launder it, now matter the currency. But the path of the money is easier to conceal with crypto than with bank transactions, because in crypto there's a large amount of potential middlemen that don't follow any KYC regulations. Of course you can do the same thing with USD by using cash. A package of cash mailed to a fake address (where your courier receives the package from the mailman) is as untraceable as anything you can do with crypto. It is however more effort and potential risk.