Yes. Kids are taught to be ashamed of their bodies by their parents and society. And then teenagers are taught to be ashamed of sex. Some societies inculcate even more shame than others.
It's one tactic to try and avoid them 'accidentally' having sex at a young age (and getting pregnant and everything). I can kind of see everything, I mean on the one side sex ed is important, but if they can avoid attempting it for a few years until they're more well-rounded individuals it'll be a double bonus.
Mind you, I've very much been a late bloomer so my perspective is probably not representative.
Mind you, I've very much been a late bloomer so my perspective is probably not representative.