Yup. You can't take an argument with such a deontological axiom and then criticize it for failing a utilitarian calculation later (about the welfare of the fina

Yup. You can't take an argument with such a deontological axiom and then criticize it for failing a utilitarian calculation later (about the welfare of the final generations) -- the argument already told you it's not consequentialist. This anti-natalist argument is bad, and so is the article's argument.