It was a nice allegory for how conflict in reality starts, just between a hunch and miscommunication, but it really lost me in the pacing and the ending. I found myself getting bored at the meaningless conflict between Katara and Sokka, and the ending just makes the episode meaningless plot wise.
I would probably rank it higher if these tribes were actually important to understand there conflict, or maybe they had come back later in the series, but they just don't. And this is solidified when the conflict that was apparently ongoing for decades, just ends as some child they don't know says he saw something different. It doesn't make sense why they would believe him and it doesn't make sense why Aang would bother lying, especially as it seems sort of out of character for him to lie like that.
Only episode I skip when rewatching.