One can only hope. The seizure for counterfeit usually occurs between USPS stations while package is in transit. Sometimes the issue is resolved (old postage plus lenient staff) other times it's just seized and binned. I've had legit packages assessed for postage and then seized (special cakes), also had an item from Australia seized. The respective postage authorities said it was a payment mismatch between postal agencies. USPS raised rates while shipper used stickers with old rates. System simply flags as counterfeit. It's not always an issue of fake postage.
Recently, a gamestore in Japan suffered loses as Nintendo switch consoles were impounded because of 'counterfeit postage'.. Of course accusations flew that USPS workers impounded the items for personal use. Game store said they'll make sure to brick said consoles..
