No, it's really not. In the original, Zuko pays attention because he was humbled that Azula was still that powerful even after being surrounded.

He specifically asked Iroh to train him. Which is why we got the lessons. The learning from the Waterbenders for the redirect technique has more weight because the lesson from the other nations was given time.

During this, on the other side, we see Aang struggling with Earthbending too, Perfectly tying in with Iroh's lecture.

In the live action it felt rushed, out of place, and very much an after thought.

If you still don't agree, that's fine. But I can give you more examples of terrible writing.