The choice to have (greater than replacement) children should be seen as an "emissions" or "income" choice for this kind of reporting, else it fails to capture the systemic externalities of their actual lifestyle.
This, as i understand it, is a sort of form of The Repugnant conclusion: https://plato.stanford.edu/entries/repugnant-conclusion/ , whereby the choice to increase population is a choice to divide the resources amongst greater and greater people, resulting in a smaller share per person. I don't think the developed world, or the "1%" should be held accountable for these sorts of outcomes.