I dont think they will have more success stopping money laundary, scams or fraud in crypto than with fiat banking.
But I guess keeping fraud and scammers down to a minimum is essential to a society.
Money laundering is a product of insane taxes. And in general making narcotics and medication off script illegal aka the black market = Money laundery
You can never stop money laundary, but by making it harder, only the professionals can figure out how to do. Not the normal person. So again to limit it I guess.