Of course it's possible with crypto, it just means you can only deal with people with a known physical presence if you want any prayer of getting it back.

A judge can order a lien or seizure of their assets. I presume people that deal in crypto still want a car, a place to stay, some nice chairs or maybe to stay out of a cage when a judge determines they are willfully avoiding a court order to pay the money back.

Of course if they have no tangible assets or the entire operation is out of jurisdiction then that's an issue, but for a random joe are you really that worse off than trying to get the Chinese government to refund you for that knockoff you bought on aliexpress?