>>40484620While you are using the game's RBY sprites you have forgotten Pokemon Green's. Remember that Pokemon are meant to be expressive, with all sorts of emotions and not always just "unappealing". They are happy, they are sad, they are quirky, nervous or mad.
In fact Pikachu, Sandshrew/Sandslash, nidoran, weedle meowth, diglett, abra, machop, doduo red's sprites, Arbok's blue sprite, Dugtrio's blue sprite show this as well.
The games aren't even the entire lore. There was the Kanto series as well, which showcases a Pokemon's unique personalities.
Satoshi's vision was for them to be expressive and showcasing a lot of emotions, not sidelined by one particular trait.