Your chosen method—refuting a rule with a counterexample—throws out all moral rules, since every moral theory has counterexamples.
I’m not sure what exactly you mean by a moral rule, e.g. “Courage is better than cowardice, all else equal” doesn’t have any counterexamples. But for certain definitions of moral rule you should reject all moral rules as incorrect.
You’re free to deny one of the assumptions, but there ends the conversation.
Looking at the post, I’ll deny “My choices shouldn’t be focused on … how to pay down imagined debts I have to particular people, to society.” You have real debts to particular people. I don’t see how this makes ethics inappropriately “about my own self-actualization or self-image.”
I’m not sure what exactly you mean by a moral rule, e.g. “Courage is better than cowardice, all else equal” doesn’t have any counterexamples. But for certain definitions of moral rule you should reject all moral rules as incorrect.
Looking at the post, I’ll deny “My choices shouldn’t be focused on … how to pay down imagined debts I have to particular people, to society.” You have real debts to particular people. I don’t see how this makes ethics inappropriately “about my own self-actualization or self-image.”