what would be wrong with using AI only in /learning mode? I've used it this way before and found it even more useful than my memory of some teachers I had. If it was locked to this mode and you could not just generate answers I don't see the harm.
I use this prompt quite a bit. You get a lot of mileage out of it. But I have a pretty good idea of what I don't understand and am very focused on what I'm after. If you don't know what you don't know, then it's a mess. Even more if you don't know how to express what you're trying to understand.
In education, meaning primary and secondary, a narrative is used to provide motivation and create an interest and curiosity for the subject. I already have that, so it's much easier than digging through textbooks. The AI doesn't do that now.
AI in learning mode has the same shortcomings as virtual classroom. The physical presence of a teacher in the room. Sets the tone.