Because Aang didn't learn anything
The fact that his team ended up dead was a consequence of not listening to them, but as the movie progresses, there isn't really a moral lesson that lets us know that Aang learned from his mistake and won't... trust a complete stranger again.
If people love Zuko, it's not because of his cruel acts, but because he stopped being cruel and learned from them.
Something that Aang lacks in this movie.
In Book 1, Chapter 12, something similar to the movie happens, but with Zuko. It turns out that at the beginning, Iroh warned Zuko to change the ship's course from north to south because a storm was approaching.
Zuko doesn't listen, he insists on continuing on the same course because it's known that the Avatar is flying around there. Iroh insists it's for the crew's safety, and Zuko directly tells him that he doesn't care about their safety.
What's happening? Indeed, just as Iroh said, there's a storm and they're in danger now.
The first difference comes here: his crew doesn't feign ignorance even though they already know the reason why Zuko insists so much on capturing the Avatar, because that doesn't excuse him from putting their lives at risk, they claim Zuko every time it is necessary, and with that, Zuko realizes his mistake. Something that the Avatar team does not do, they confronted him once and when Aang insists, they resign themselves to helping him because it is something that he needs even if he pays for it with their lives.
And then comes the second difference: when they manage to get to safety, Zuko does something that Aang did NOT do in the movie—he apologizes. Can you imagine?! Book 1 Zuko actually showing remorse and character growth?! Amazing, never seen before.
And then the third difference! In the midst of the storm, Aang appears with Appa and Katara because they need to rescue Sokka. Zuko sees them and knows he has a new opportunity to capture him and thus be accepted back home. Yun asks him, "What do you want to do, Sir?" Zuko knows that any order will be obeyed, he knows that the moment he shouts "Chase him!" his crew will have no choice but to obey.
Which brings us to the cherry on the cake: Zuko, having made up his mind, simply says, "Let him go. We need to get this ship to safety." He immediately knew he had to learn from his mistake, he couldn't risk the lives of his crew again. He put aside his own desire to capture Aang in order to keep those who support him safe. Even when capturing him could represent a significant change in his life AND HIS NATION.
Zuko understood the consequences of his actions and how they could affect those around him in just one episode. Aang is immediately forgiven without a single "I'm sorry," and his team joins him to repair HIS mistake. Sure, I don't expect them to yell horrible things at him and abandon him mid-mission, but we can't ignore how vulnerable the team was because of Aang's demands. What I would have liked was Aang being regretful and apologizing, hell, just apologizing to Katara alone would have been enough for me.
