I think EY might just not be familiar with the physiology of children. Didn’t the original version of chapter 7 imply that Draco couldn’t get an erection? Puberty is nothing resembling a requirement for those. And the alternate version of “boy who lived gets Draco Malfoy Pregnant” had female Draco as 13, when it would have made more sense for Harry to be the older one (boys hit puberty later on average than girls).
I think EY might just not be familiar with the physiology of children. Didn’t the original version of chapter 7 imply that Draco couldn’t get an erection? Puberty is nothing resembling a requirement for those. And the alternate version of “boy who lived gets Draco Malfoy Pregnant” had female Draco as 13, when it would have made more sense for Harry to be the older one (boys hit puberty later on average than girls).