This is a reply to the final bit - no, I don't 'want' antinatalism to be true. Even if I did - and I repeat, I don't - that would be irrelevant to the credibility of the argument.
Anyway, here is the argument - the Kantian argument (that you can call Terry if you prefer) - again.
1. If an act will affect another person in a significant way without their prior consent then it is default wrong
2. Procreative acts significantly affect another person without their prior consent
3. Therefore procreative acts are default wrong
Note, the conclusion is not that all procreative acts are wrong, or even that any are, for it is possible that all procreative acts are ones in which there are other morally relevant considerations in play that make the act overall morally justified or simply cancel the otherwise wrong-making quality of the feature described in 1. (If you think that is in fact the case, say and explain what those other features are).
Note too that premise 1 does not say that if an act affects another person in a significant way without their prior consent that it is therefore wrong. It says it is 'default' wrong.
Premise 1 is very weak, which is precisely why it is going to be extremely hard to deny. I mean, I just don't see how one reasonably can deny it.
Nevertheless, that does not establish that procreative acts are wrong, but it does set up a burden of proof. They are wrong 'other things being equal'.
What you need to do is describe a case taht is relevantly analogous to a case of procreation - that is, a case in which another person is significantly affected without their prior consent - but which is obviously morally fine.
If or when you present such a case I will simply look and see what the most plausible explanation is of why the consideration mentioned in 1 is not making the act wrong and see if that consideration is present in typical procreation cases.
For example, take the case of a surgeon operating on an unconscious person without their prior consent.
Well, for this to be a case in which the surgeon's actions are obviously morally fine, it would need to be a case in which failure to perform the operation would result in something significantly bad happening to the patient. Yes? I mean, let's say I am ugly and I happen to be unconscious. A surgeon decides to give me facelift without my consent. Now, obviously that's wrong and seriously so. And it is wrong even if I actually like the resulting face. It's wrong.....wait for it......because the surgeon didn't get my consent.
But in a case where I will die, or even one in which, unless the surgeon does something, my face will be scared for life, and there is no time to wait for me to regain consciousness, then I think virtually all would agree that the surgeon would be morally justified - probably obliged - to operate on me, despite the lack of consent.
Do examples of that kind suggest that procreation is morally okay? Not at all, for it is blindingly obvious why, in this case, the surgeon ought to operate - it is to prevent something incredibly bad happening to me. Yes? So, although acts that significantly affect others without their prior consent are default wrong, they are sometimes right when not performing them would result in a significant harm to the person in question.
Clearly this does not apply to procreative acts. Procreation does not prevent something bad happening to the person who otherwise would not be created - as I said in my opening post (maybe you should re-read it).
So arguing that surgeon cases like the one I described provide some kind of telling evidence that procreation is morally fine is as unreasonable as thinking that they provide some kind of telling evidence that it is fine for surgeons to go around giving unconscious people facelifts willy nilly.
What about your government cases? Well, exactly the same applies. They're simply not relevantly analogous to procreation cases. So all you're doing is pointing out that sometimes we are plausibly justified in doing things that significantly affect others without their prior consent - which isn't in dispute.