Then they have an altruistic EV. That's allowed.
But as far as your preference goes, your EV >= any other CEV. It has to be that way, tautologically. Extrapolated Volition is defined as what you would choose to do in the counter-factual scenario where you have more intelligence, knowledge, etc than you do now.
If you're totally altruistic, it might be that your EV is the CEV of humanity, but that means that you have no preference, not that you prefer humanity's CEV over your own. Remember, all your preferences, including the moral and altruistic ones, are included in your EV.
Sorry, I don't think I'm being clear.
The notion I'm trying to express is not an entirely altruistic EV, or even a deliberately altruistic EV. Simply, this person has friends and family and such, and thus has a partially social EV; this person is at least altruistic towards close associates when it costs them nothing.
My claim, then, is that if we denote the n = number of hops from any one person to any other in the social graph of such agents:
lim_{n->0} Social Component of Personal EV = species-wide CEV
Now, there may be special cases, such as people who...
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: