>>40668214Because starters are the mascots of the generation and for the anime.
https://www.pokemon.com/us/pokemon-news/meet-the-makers-of-pokemon-lets-go-pikachu-and-pokemon-lets-go-eevee/>Masuda: At the same time, probably because of the popularity of Pokémon the Series, I think most Pokémon fans prefer the less scary, kind of cuter, and more inviting look that the animated series provides. So the feel of the world changed to be a little less scary, and the Pokémon started to look less monsterlike and more like the impression that people get from Pokémon today. We're taking those ideas and continuing to implement them in these new games.Pokemon are like this now because of the anime. Being humanoid makes them easier to animate, and giving them clear personalities makes them easier to characterize.