I thought the same until I had kids. I realized that kids generally want to learn, but they usually think what the teacher is telling them is not the best thing to be learning. No technology, not even AI, overcomes the student's ego; in fact, technology rarely even tries to address that issue. I think this often applies to adults too. Teachers continue to be necessary to help students achieve an appropriate level of humility to be able to learn.

You clearly have enough humility in your field to be able to soak up knowledge. That's great for you! I suggest your dedication is rare and teachers continue to be essential for society.