These mass lawsuits have been thrown out by most courts for being overly broad. In on instance, they intended to go hard after one defendant, only to discover he was blind.
Besides, porn producers have been fucking the public over for years. They shoot one scene, stick in 4 or 5 different releases and continue to call them "new." I once subscribed to a site that advertised 21 scenes of some whore: 6 of them were all identical. Dickwads like Norman Bentley shot scenes, then sold them to three of four different websites. They've been scamming us plenty.
Plus porn is so God damned boring now. They are rapidly running out of TV shows to title "Not ________________ [insert 1970s sitcom}: a XXX Parody." What a fucking joke.