Earlier quoted context omitted.
I think you're misinterpreting the argument. The paperclip maximizer scenario is not "over-optimizing" anything, it's an example of that same ethical pluralism you mention. The paperclip maximizer believes that maximizing paperclips is the highest possible good. There is only one set of facts about reality, and rationalism aims to find that set, but it makes no claims about what should be done with that information.…
> Human ethical norms are highly complex, and are the result of a long evolutionary history that will not be shared by any AI. The chances of any arbitrary set of ethical values being compatible with human life is very low. If AI is trained by a huge corpus of human language, it may very well share our norms/values.
So that's not very comforting tbh.