So we a situation where people can't even construct something from their imagination that is virtuous in all concerns. & people want financial technology to meet that bar? Seems unlikely to me.
Could there be some money laundering? Probably. Will there be attempts by the owners of the payment processor to stop such a thing? Probably. Will there be perfection? Probably not.
From what I understand, most money laundering occurs in the traditional financial system. Does it follow we should tear it down?
& besides, I thought crypto(assets) were a fad. A bubble. A figment of the imagination. A plaything for greater fools. If that's true, it's hardly worth worrying about.