Thanks anon! That’s what I aspire to be, the best anti Reylo. Idk, doesn’t Iroh have a redemption arc in the show? At the end of Book1 he tried to save the Moon Spirit. At the end of Book 2 he gave up his freedom so a wounded (actually dead, it turns out) Aang and Katara could escape. If Aang and Katara had been captured, Aang would not have been revived and the Avatar Cycle could have ended with him. At the end of Book 3 Iroh helped liberate Ba Sing Se from Fire Nation occupation, atoning in some small measure for the death and destruction he brought to that city.
I think the point of Iroh’s character is that people can change and grow, even later in life. It doesn’t mean the harm Iroh did goes away, or that the things he did during the war were okay. If he’s a moral authority it’s in the sense that he is a wise man who knows right from wrong, in part from having done wrong in the past himself. He worked to set things right, but the wrongs he did won’t go away. They’re both the truths of the character and I think both extremes in responding to him disregard one of the truths–whether it’s uncritically squeeing about how good he is as though he never did anything wrong, or saying he is forever evil because he once did evil things.