Now just hold on a second. You are arguing by uncharitable formulation, implying that there is tension between two claims when, logically, there is none. (Forgive me for not assuming you were doing that, and thereby, according to you, "ignoring" your previous comment.) There is nothing contradictory about holding that (1) ethical theories that include moral luck are wrong; and (2) utilitarianism is an ethical theory and not a meta-ethical theory.
(1) is an ethical claim. (2) is the conjunction of a meta-ethical claim ("utilitarianism is an ethical theory") and a meta-meta-ethical claim ("utilitarianism is not a meta-ethical theory").
( I hereby declare this comment to supersede all of my previous comments on the subject of the distinction between ethics and meta-ethics, insofar as there is any inconsistency; and in the event there is any inconsistency, I pre-emptively cede you dialectical victory except insofar as doing so would contradict anything else I have said in this comment.)
OK, if you've abandoned your claim that I "consequentialism is not a meta-ethical attribute," is true by convention, then that's fine. I'll just disagree with it and keep including consequentialism vs deontology in meta-ethics, just as I'll keep including moral luck in ethics.
There seems to be a widespread impression that the metaethics sequence was not very successful as an explanation of Eliezer Yudkowsky's views. It even says so on the wiki. And frankly, I'm puzzled by this... hence the "apparently" in this post's title. When I read the metaethics sequence, it seemed to make perfect sense to me. I can think of a couple things that may have made me different from the average OB/LW reader in this regard: