You're right! But also technically wrong. Since the pokemon world seems to be based on a wipe and reset of nations across the world, they probably long since lost any language we know of so the transfer of an anglo-saxon language from Galar to Unova wouldn't make sense, especially considering what we know about the previous kingdoms in the world. Interestingly, the whole of the pokemon world uses letters loosely rooted in Unown canonically, so I figured just calling it English was fine- it's not like making up mumbo-jumbo was alright with me anyway. I'd neeeeever do that.