A lot of what you've said sounds like you're just reiterating what Luke says quite clearly near the beginning: Ideal Advisor theories are "metaphysical", and CEV is epistemic, i.e. Ideal Advisor theories are usually trying to give an account of what is good, whereas, as you say, CEV is just about trying to find a good effective approximation to the good. In that sense, this article is comparing apples to oranges. But the point is that some criticisms may carry over.

[EDIT: this comment is pretty off the mark, given that I appear to be unable to read the first sentence of comments I'm replying to. "historical context" facepalm]