We ought to act morally, that is the only is. The utility of an action can be measured in pleasure & displeasure. Across an array of different actions One aims to create the most positive situations, regardless of intellect or ability that lead to a good life, more often than not.
I like the focus on the individual in this decentralized way of ethics. I am a believer in strong institutions if these institutions can provide a straightforward framework where the rule of law applies I think everyone can be an equal in the nation.