What will stop them now following this transaction ,and trying to get money back from coinbase, circle,etc? Because they can easy take it, and most people won't be able to pay 5000 - 15 000$ for a lawyer to maybe get back their 3000$, or 10 000$
if it requires an advocacy fee of more than the amount then there is no one who will appeal for their fund. And in this case, all the fund will be lost who has a lower fund than the fee of a lawyer for their advocacy. But still, I think few may appeal as there is a chance to get more than the original amount if won on jurisdiction.