That is bulls***. Never saw the draw about owning a swatch of a game jersey.
Even worse is that in my travels on Ebay I saw cards with effing neck tags (like the Center Ice Collection tag, for example) from player jerseys, even though gamers did not have those tags commonly.
This seems to contribute to the theory that the card companies just have the players put on any random jersey and then cut it up and put "player worn" on the back, even if not worn in actual gameplay.