I'm clearly not as deep as you in the reading of Aristotle (though I did read Nietzsche's BGE a long time ago). However, I'd point out the distinction from an e

I'm clearly not as deep as you in the reading of Aristotle (though I did read Nietzsche's BGE a long time ago). However, I'd point out the distinction from an ethics course I took between 'descriptive' ethics and 'normative' ethics. Both can coexist and they serve useful purposes. The ethics of a group is the rule set agreed to by the group, including how to deal with deviations that naturally arise. This is more of a descriptive, evolutionary phenomenon. Normative ethics is more a proposal of an ideal or future ruleset, which needs to both appeal to those with the power to follow and enforce the rules, and to also ensure the preservation and stability of the rules and the people who follow them.