They take Utilitarianism and bring it up to speed with computation and acceleration, leading to an overwhelming focus on the need to formalize universal morality in order to implant it into the coming superintelligence.
Alexander is committed to Utilitarianism as the only useful moral theory.
MacIntyre, on the other hand, is fundamentally critical of both Utilitarianism and the "deontological" style of ethics that tries to formalize universal moral rules. He historicizes these movements, explains the cultural context in which they seemed inevitable, but deems them failures: