Earlier quoted context omitted.
I’d say it’s probably more like there aren’t many Swedes who could deal with a house with 12 kids. The after school logistics alone must be a nightmare. Either that, or there’s something plugging the loophole the GP mentions.
What about the difficulty of having 12 pregnancies? You'd have to set aside 12 years in the first place. A woman in such a family isn't planning on working.
Your job is probably protected while on maternity leave too.
I*d say that one of the main difficulties with 12 pregnancies is the actual pregnancies - they are hard on the body and honestly, it isn't recommended that folks have a pregnancy a year - if one even is able to have so many. The more likely situation is that having 12 children means some of those children are fosters or adoptions. And at that point, I don't actually care if someone has 12 children so long as they are good parents.