Yeah but....my logic is more "yeah pokemon is the focus, guns aren't" and "if guns were invented, they wouldn't be competing with pokemon since they were earliest gun designs and those wouldn't be real efficient over just making a pokemon fight for you." people wouldn't waste time with some gun when you can use a pokemon methods that has been tamed for probably since all of civilization and can do far more things. so guns wouldn't get to the level of being relevant in the first place, because this is a world where pokemon are relevant, not guns.