These questions get on my nerves. Pokémon is a kids game of animals running around with magical powers-it’s kinda odd to question Pokémon’s logic when there are pidgeons that can cause heat waves. You could ask more than 10 of these per Pokémon. Sure, there are theories, but these aren’t fact. GameFreak probably just gave the Pokémon the move for coverage or just for a buff or so it didn’t have a tiny movepool. Therefore, I think these questions shouldn’t be allowed.