does the game assume ur american?

noticed a few things in avi’s route in s3 and it lowkey made me kind of annoyed. when mc and avi were making dinner in the kitchen, she had no idea what a chip butty was? as an english person literally EVERYONE i know knows what that is. and also, when mc uses the word ‘grand’, avi says something about her picking up on irish slang. like, what if we’re actually just irish? i kind of understand why we can’t actually pick where we’re from, because netflix would have to account for all different traditions and slang etc, but could it at least but a bit more ambiguous? idk