I admire this man's balls and money making skills.
I also admire him for standing up to somewhat wrongheaded bullying tactics. Sending letters to people saying 'you owe us $2500 and we'll take you to court if you don't pay,' is going to do bugger all about piracy. It doesn't sound like a very viable method to start a court case by either, especially if the evidence they intend to file is as bad as their diplomacy.
Threatening the people at the end of the chain is utterly pointless, they should be tracking down the ones in charge of the sites, which of course they won't do because these people have enough money to defend themselves or are well out of the USCG's reach.
That a $10 mail order pack can foil a lawsuit says far more about the people filing the suit than the dude selling the pack. Which is a shame, I can't help but feel I'm rooting for the bad guys here.