I believe clarifying things immediately and succinctly may be why the author mentioned LLMs. They have the potential to provide this sort of feedback. They are

I believe clarifying things immediately and succinctly may be why the author mentioned LLMs. They have the potential to provide this sort of feedback. They are obviously imperfect, but for the sort of questions that many undergraduates get stuck on (code won't compile due to a missing semicolon, etc) they are already a great asset.