This is completely ridiculous clown math.
This ASSUMES all of the good cops know about and can identify the bad cops.
It's like saying all democrat communists deserve the death penalty because of the acts of a few democrat communists.
Truth is the enemy are few and hold sway over many through deception.
Peel away the many layers of deception and expose them and 99% of the people will support removing them from all levels of power.
That's how you save as many as possible.