This is a theme that crops up fairly frequently as a matter of semantic confusion and is a confusion that is difficult to resolve trivially due to inferential differences to the actual abstract concepts. I haven't seen this position explained so coherently in one place before. Particularly the line:

I think it was a huge mistake to claim that it was the subject matter of morality in the first place, that we were talking about some mysterious ineffable confused stuff when we were asking what is right.

... and the necessary context. I would find it useful to have this as a top level post to link to. Even if, as you have just suggested to JamesAndrix, it is just a copy and paste job. It'll save searching through comments to find a permalink if nothing else.