Unfortunately all this stuff is by design - it shouldn’t be a surprise to anyone that a non-reversible currency that can be handled in a non-traceable way might be used for crime and scams.
I assume the US government will ask Coinbase to freeze these assets. But that is not DeFi.
This is the traceability I mean - there is a reason that ransomware uses bitcoin rather than a PayPal account even though the transactions are in the ledger (because the transaction can't be cancelled, and even logging into the PayPal account could result in your physical location being traced unless you are very careful).
https://en.m.wikipedia.org/wiki/The_purpose_of_a_system_is_w...