> Surely the Yamato people are indigenous to southern Honshu
Sort of. It's worth clarifying that "indigenous peoples" is a specific legalistic term which connotes more (less?) than just "indigenous". In that context the "Yamato people" as the dominant cultural group in Japan typically do not qualify as an "indigenous people". Confusing matters further, "indigenous" itself is often used in the same, more restrictive context.
Sort of. It's worth clarifying that "indigenous peoples" is a specific legalistic term which connotes more (less?) than just "indigenous". In that context the "Yamato people" as the dominant cultural group in Japan typically do not qualify as an "indigenous people". Confusing matters further, "indigenous" itself is often used in the same, more restrictive context.