You literally proved the OP's point ... thinking you're learning. More like scratching the surface, with lots of invalid data while not being able to recognize what's invalid.
It's like with latest vector of attacks being spamming Github with malware injected in proper looking code in hope of AI to index it.
Then you paste the code because you don't understand it, but you take it as working and only doing what you've asked for.
It's about guiding me in _doing_ exercises so I learn and I can evaluate if I learned something if I can apply the learning myself.
If today's top LLMs are reliable enough (without grounding) to academically learn "complex topics" from, may be I need to adjust my priors. I must say, I do find myself chatting about other topics (without the need for grounding) that I'm trying to "absorb" (not really learn), like Behavioural Psychology & Philosophy.
[0] Products like NotebookLM are built specifically for such usecases.
LLMs give me structure based on my current skill level. And basically always I accompany this with books, I love reading. It's a nice combination for me.