>>56738616It doesn’t. The yellow remake, Let’s Go, completely breaks with tradition since it was designed to get a Pokémon game on Switch with Pokémon Go mechanics as fast as possible.
Also, you have to consider the timeline of events. HGSS was released in 2009 around a decade after the originals with the Pokémon formula going strong. All games have taken place in Japan at this point. You won’t even have simultaneous international release until X and Y. The company is still focused on being primarily Japanese in both customer base and game design, and HGSS is very Japanese as far as Pokémon games go.
Let’s Go was 2018 a full twenty years after the original release and in a more experimental time period with the generation 7 games. The main character is even confirmed to be a dark skinned girl via the Pokémon Evolutions episode with Green being a side character in the games.