If I had to define it using your taxonomy, then yes. However, it’s also trying to do something broader. For example, it’s intended to be persuasive to people who don’t think of meta-ethics in terms of preferences and rationality at all. (The original intended audience was the EA forum, not LW).
Edit: on further reflection, your list is more comprehensive than I thought it was, and maybe the people I mentioned above actually would be on it even if they wouldn’t describe themselves that way.
Another edit: maybe the people who are missing from your list are those who would agree that morality has normative force but deny that rationality does (except insofar as it makes you more moral), or at least are much more concerned with the former than the latter. E.g. you could say that morality is a categorical imperative but rationality is only a hypothetical imperative.
Would it be fair to say that this post is mostly trying to move people who are currently at 3 or 4 in this list to positions 5 or 6?
If I had to define it using your taxonomy, then yes. However, it’s also trying to do something broader. For example, it’s intended to be persuasive to people who don’t think of meta-ethics in terms of preferences and rationality at all. (The original intended audience was the EA forum, not LW).
Edit: on further reflection, your list is more comprehensive than I thought it was, and maybe the people I mentioned above actually would be on it even if they wouldn’t describe themselves that way.
Another edit: maybe the people who are missing from your list are those who would agree that morality has normative force but deny that rationality does (except insofar as it makes you more moral), or at least are much more concerned with the former than the latter. E.g. you could say that morality is a categorical imperative but rationality is only a hypothetical imperative.