I’m not sure late unification is necessarily the determing factor here. e.g. look at Italy

something so sexy needs to be marked as NSFW

and that’s why you can see that once the person has gone to school they protest (in the next panel)

you then can see in the panel after they protest that they become the parent, telling their child to go to school. presumably because they forgot what they learned at school (or because they think school is the best way for children to learn about these things - which seems a little less likely)