So, this criticism is implying that simply understanding human speech will (at a minimum) let the AI understand moral philosophy, which is not trivial.
I don't disagree with the other stuff you said. But I interpreted the criticism as "an AI told to 'do what humans want, not what they mean'" will have approximately the same effect as if you told a perfectly rational human being to do the same. So in the same way that I can instruct people with some success to "do what I mean", the same will work for AI too. It's just also true that this isn't a solution to FAI any more than it is with humans -- because morality is inconsistent, human beings are inherently unfriendly, etc...
I think you're eliding the question of motive (which may be more alien for an AI). But I'm glad we agree on the main point.
If it's worth saying, but not worth its own post, then it goes here.
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one. (Immediately before; refresh the list-of-threads page before posting.)
3. Open Threads should start on Monday, and end on Sunday.
4. Unflag the two options "Notify me of new top level comments on this article" and "