I'm not the person you're replying to, but I think the main reason you'd expect to see this on iOS is due to the additional Face ID sensors available on most of

I'm not the person you're replying to, but I think the main reason you'd expect to see this on iOS is due to the additional Face ID sensors available on most of their devices. Presumably Apple could offer a version of this tech that features higher quality tracking and thus a more realistic and natural-looking final output.