Well, an LLM doesn’t have the capability to like anything more than anything else. It doesn’t really matter to GPT if your diary excerpt is the worst piece of writing ever written, or the most brilliant - it’ll just tell you what you want to hear and that’s that.
Only because they've been RLHFed and prompted to be agreeable. A Marvin the Paranoid Android LLM could similarly be designed to hate everything equally.
"Tell you what you want to hear" is a matter of training and prompting, not the technology itself. But I agree that asking an LLM to make an aesthetic judgment is a fool's errand.