>But if you are incapable of understanding anything, as I believe LLMs are, then you are incapable of understanding what is moral and what is immoral.

Of course they can classify certain actions, including their own, as moral and immoral if you give them a reference point. They probably do it better then some people. The question is how do you prompt this behavior, but that's a technicality in the harness design more than it is a fundamental problem of the LLM as a thing.