No, his argument is that CEVs of any (subset of) humans is a tiny cluster in value space.
He has, in fact, made that argument (as well). I repeat the claim:
Eliezer has a lot to answer for when it comes to encouraging magical thinking along the lines of “all (subsets of) humans have the same Coherent Extrapolated Volition”. He may not be confused himself but his document certainly encourages it.
He has, in fact, made that argument (as well). I repeat the claim: