lillie is a yamato nadeshiko, which is basically japan's ideal view on what girls are supposed to be
>green eyes and blond hair, both of which are considered exotic and hard to find in nipland
>her clothes are white, symbolising that she is perfect, pure and never does anything bad
>feminine personality and interests, japs love their shy, powerless girls
>she's young and looks flawlessly pretty, corresponding with japan's youth culture
>always has to be saved and supports the player in double battles, you never battle her because you don't want to hurt her pwecious feewings
GF is fully aware of what they're doing, they have created a character that they can effortlessly make money off of people, whether they be weebs or horny nips or girls who want to support a female lead. the more money they make from SM and all of the lillie merch, the more they will use said money for things that should go to important things for pokemon games, but they won't because this is GF we're talking about