Logic was applied because you need to think about actually having up to 4 kids at once. That's still entirely necessary.
The "whole not carrying a baby" thing attempted to cover the idea of carrying your own flesh. I just didn't go into detail on that because I thought it was obvious. So no, I'm not arguing about logic.
Finally, "not as crazy as it seems" was a conclusion to the three of my points - not a strawman.
Pretend there's enough sperm you don't need IVF, or something. I'm pretty sure the thought experiment is about something that only affects the man, not the woman or child.