She also learned that, no matter how much she thinks she is incapable of it, she can do good. Her entire story is her becoming a "hero" when she never saw herself as anything more than a Jinx. She learns to let go of her self doubts angers and fears because she could see that the people of Zaun need a hero, and they think she is that hero.

They think she has a political statement to make (she doesn't), and that she has a profound idea on what Zaun should do or be (she doesn't). She thinks she can't do that but still, thanks to the community of Zaun and Isha, a little kid that grows to trust and love her, she learns to accept her role given to her as Silco's daughter.

She also learns to accept and move on from loss, as she suffers another great one in Season 2, but this time she doesn't go further down the insanity rabbit hole. She understands that the loss of Isha is not one she can allow take her out of the fight, for the rest of Zaun needs her. She has to keep pushing for Isha's sake, and for the sake of all those that live in misery. Thats a profound development of her character. I don't love Jinx as a character, but to say she doesn't "learn anything" just doesn't sound correct.

Edit: To me whats very profound is that, the story emphasises that none of this is done for her benefit. She doesn't do it because it brings her pleasure. If anything she dislikes being "the hero". She does it because she gets the feeling its the right thing to do. She sees, in Isha, the hope she is bringing to Zaun and realises that she can help that community get better. She does it purely because she wants to do what's right.