I think it depends on what you want to learn and what your definition of "learnt" is.
The other day I realised I had no idea how DNA and life works. I guess I studied it at high school (25 years ago), but maybe it didn't go into much detail or it just didn't click.
So I asked ChatGPT to explain it to me, I came up with my own mental model from it's explanation, told it that, then it corrected me where I misunderstood things. We went backwards and forwards for an hour, me asking questions, it correcting me, until I felt like I understood the whole picture.
Am I going to become a biologist and study the origins of life from that? Definatley not! But if my kids need help on their biology homework, I now understand the basics of it.