[Thought experiment] If alignments are objective how do we know what they represent?

[OldTrees1]

I'm going to focus on this, because I think it's the core of where we're disagreeing or dancing around each other:

To reiterate: The answer, without making any assumptions about the asker at all, to the question, "What ought I to do?" - regardless of whether morality is objective or subjective - will always be, "It depends on what you want."

What someone wants may, or may not be morally relevant, and if relevant may be moral or immoral. So while the overall question "What ought one do?" might have a large answer (John Stuart Mills thought the theory of Utilitarianism was the answer), I have no reason to presume the answer depends on what I want or to presume any other hidden purpose.

This core of disagreement might not be resolvable. And that is okay.