GPT very naturally encourages you to write out questions. That by itself can be useful for learning. You can even get answers for your questions.

And for a well trodden basic technique like mathematical induction, GPT is probably 'smart' enough to be able to explain everything.

Basically, most questions a beginner might have are already covered in something like Stack Overflow, so GPT 'just' has to give you the right cached answer, instead of coming up with new thoughts of its own. (This is very hand-wave-y.)