Their entire con relies on the appearance of power/control/authority. You would be better off asking them to stop breathing, it would be easier for them.

Remember Baghdad Bob? They would spew their toxic subversion from the gallows if we allowed it, as it is their one mechanism to get us to do what they want. They have two choices, keep up the con or suicide. Even simply walking away is impossible for many reasons. Rats on a sinking ship, hope it was worth it.