X frowned at them. “Can’t you tell?” Then X broke into a big, mischievous grin, “It’s a Y!”9
I think this story is optimistic. it shows that even though people might try to enforce and keep gender norms the same. That does not allow people to grow in the ways they should best. At first that was very difficult for the parents to see, but I think they grew into it. A moment I see optimism is in the paragraph before this, where X says its a Y.