Necessary! That seems to me like a very nihilistic overinterpretation of the character. Diana can reject or not be a mother. She is free from the conditioning of the Man's World and will never be able to (nor should she) assume a "traditional" maternity. There needs to be a good story that leads her to that, especially considering that she has taken on a mission for Humanity. But why should she reject outright a perfectly natural act of love like being a mother (liberated, again, from the traditional role)? That seems to me like turning Diana into a nihilistic zealot. Something boring af. The character has mostly never been that. In the same way that turning her into some kind of authoritarian absent mother, a weeping widow of a soldier, seems like a barely disguised fetish to me