I've actually never seen it before, it was just one of the top examples when I searched.

Looking it up now, you're not going to believe this, but it's because of Harvey Weinstein personally holding the film rights hostage. Somehow after a license expired, the film rights reverted to him, and he offered to sell it back to Kevin Smith at some unreasonable price that Smith didn't want to pay. It sounds pretty ethical to torrent at this point.