I think the school experience proves that doesn’t work. Reminds me of a teacher carefully breaking down the problem on the board and you nodding along when it is unfolding in front of you in a directed manner. The question is if you can do it yourself come the exam. If all you did to prepare is watch the teacher solve it, with no attempt to solve it from scratch yourself during practice, you will fail the exam.

That very much depends on the topic being studied. I've passed plenty of exams of different levels (school, university, professional qualifications) just by reading the textbook and memorising key facts. I'd agree with you if we are talking about something like maths.

Also, there's a huge difference between passively watching a teacher write an explanation on a board, and interactively quizzing the teacher (or in this case, LLM) in order to gain a deeper and personalised understanding.