What is the threshold?

If two people accounts were unjustly frozen (and they have to do some work to unlock them), and at the same time two hundred people life savings were saved, would that be OK with you?

I don't know about them, but there are plenty of ways for law enforcement to get mule account numbers. After all that's the whole point - actual criminals don't have to reveal their own identity, instead they convince a "mule" to (knowingly or not) participate in a crime.