And actually, it would also require the person making the post to have utterly throttled their potential audience by explicitly selecting that language rather than English when making the post. So I don't think I'll ever be algorithmically shown a post in most of those languages, if any are made.

Bonus: It relies entirely on self-reporting the language of your post, so it's easy to just... not do that. When I turned off English, all I saw were posts consisting solely of an image, because a 6-minute-old Dutch post I'd seen was tagged as English—probably for the best, maximizing the audience.