The poster you're replying to is basically correct about how civil asset forfeiture works in the US. If you search, there are plenty of articles about similar cases.
Edit:
The part that most filled me with rage;
The CBP seizure notice gave the Kazazis a number of options for proceeding with the case. They could abandon the cash completely, or they could make an “offer in compromise” — letting CBP keep a certain percentage of the seized cash if it returned the rest.