We are not talking about some ideal "Prisoner's dilemma with mind-clone" scenario. After the mind states of your copies diverge a little bit, and that would happen very quickly as you spread your copies to different machines, they become effectively different people: you wouldn't be able to predict them and they would't be able to predict you.

You really think you would diverge that quickly?

You mean the guy who would choose dust specks over torture and who claims on his OKCupid profile that he's a sadist? Yeah, I'd totally trust him in charge of the world.

I'm ... not sure how those are criticisms.