You’ve mentioned before how, in the Pokemon world, no one seems to know how Pokemon breed, which makes professors and breeders seem incompetent. Have you thought maybe that professors and breeders are lying about not knowing? I say this because every single way to experience the Pokemon universe is through the perspective of a 10 year old trainer, a young boy or girl who probably doesn’t know about sex. It would be strange to give random children “the birds and the bees” talk all the time.

It’s more than that, though.  In Gold and Silver, Professor Elm is tremendously excited to hear that Mr. Pokémon is claiming to have a Pokémon egg, because at that point (and there is dialogue elsewhere in the game that confirms this explicitly) no-one even knows for sure that Pokémon hatch from eggs.  Why would anyone be concerned to hide that from a child?

EDIT: Actually, come to think of it, even when you think about the day-care people producing lines like “we don’t know how [the egg] got there, but your Pokémon had it” that’s still bizarre, because why would anyone be uncomfortable telling a child “your Pokémon laid an egg”?  There’s no need at all to mention the sex which presumably preceded it.  Seriously, eggs are, like, the most kid-friendly method of reproduction ever.