first of All , Pokemon Anime never meant for only 6 year old .
Pokemon is Anime based on a E-rated Game and If You ever consider the Storyplot/Purpose of this Show that You would realize Pokemon were meant for Kids around 10 to 12 year old .
However , Some Idiot believe Pokemon meant for only 6 year old girls because it has Cute Little Animal .
Well , If You see the Difference between Doaremon & Pokemon rating then its understandable that the 6 year old already rejected Pokemon who desperately trying to impress them . Because Pokemon never meant for Them !
Suppose , One Piece Arthur decide to target Kids and remove all Mature content and Violence from the series .
Do You think One Piece still be Popular .
No , Instate it will lose its remaining Audience !
Because One Piece never meant for them , One Piece meant for Teenager. Takeshi Shudo knew this very well and thats why he add a lot of Mature content in the Show but His Successor is a Complete idiot Who believe Pokemon should aim at 6 year old because it has cute little Animal !
Kusaka knew this well and that why he too add Mature content in the Pokespe .
And Those American Cartoon has fair share of Mature content like that ''Courage the Cowardly Dog'' .
I also remember , In one episode of Adventure Time , Fin told Jack to have ''Intercourse'' with his girlfriend in the closet .
So , Don't try justifying Pokemon Anime's idiosy by saying Manga is too Mature . Because The Manga aim toward the Audience it meant too !