In a system run by people, the transaction could be reversed, traced, and the culprits eventually brought to justice. In a system run by algorithms, designed to avoid oversight by people (governments), there is no such powers. There's no reversal. There's no checking the name on the account the transfer was to. It's just gone. I do not understand why people who have legal intentions would want to be part of the crypt…
Arguably it's the same risk as holding paper notes right? If I steal your life savings from under your mattress, there isn't necessarily anything to trace it back to me. However, there is a physical limit, pretty damn hard to run off with half a billion worth of paper notes.
How do you deal with it when the money could be in the pockets of an Eastern European teenager with one script run?