>>55464971Pokemon in earliest days of its existence was not really targeted towards children. It was made by bunch of Japanese otakus for Japanese otakus. This is why you have more spicier or "adult" elements.
Only after Pokemania exploded outside of Japan the image was haphazardly changed to be more kids friendly... but some "classic" elements stayed because nobody was an absolutely degenerate to think that tummy of cartoon character can be fetish and when they finally realized it, it was well recognizable design that was too ingrained in image of the franchise.