Through hyperbole, you imply that he's overpaid by market forces. If he manages 20.000 people and increases productivity by just 10%, he'd be worth 2.000 "normal guy" salaries. So a 100 factor doesn't seem far fetched to me.

What strategy would you suggest to arrive at a better price for his work?

Meta basically just paid $14B to acqui-hire an exec.

Maybe the lesson here is to be CEO.