I still think apps like this undermine your goal, and I say that as both an AI booster and lover of multiculturalism.

If we're going to improve humanity by being pluralistic and open to understanding other cultures, that must come from examining the conditions and content of that culture itself, not any simulation of them. We can't get closer to people by avoiding talking to them, listening to them, reading their writing, eating their food, going to their temples, etc.

AI helps with none of that but it could fool people into thinking they had done those things.