>>57004766And knowing GameFreak, the fact that Pokemon is a game geared towards toddlers who have never played a video game before, you won't be allowed to separate voice language from text language, since they don't want little Timmy getting confused on why the characters are speaking taco while the text shows english.
And since you aren't allowed to change the game's language after you start it, you're absolutely shit out of luck without creating an entirely new Switch profile and starting a new save JUST to play in another language to hear its voice acting.