Except this "special tool" did no such thing. It invalidated URLs pointing at content. The same content was kept accesspible via other URLs, and uploaders knew

Except this "special tool" did no such thing. It invalidated URLs pointing at content. The same content was kept accesspible via other URLs, and uploaders knew how to exploit this. Furthermore, the number of URL invalidations was capped, and one of the seized emails reveals that this cap was determined by the amount of countent they could risk to lose without affecting their revenue.