then why care about human preferences? Preference is caring.

How is it possible to establish any "ought" at all, in a universe seemingly of mere "is"? You seem to start with the premise that it is possible. I would deny it.

Adds up to moral normality, including moral errors, moral progress, and things you should do whether you want to or not; Why should demand it add up to "normative normality" any more than "theological normality" or a variety of things that strike us as intuitive?