Thought experiment: if all native / indigenous people are from somewhere, the only thing that defines natives is time as there are no indigenous people other than in concept and idea in someone's mind.
Borders and countries are nothing more than idea, and no one has any claim to any land and more than anyone else.
I always think about this when people make indigenous people's statements, and really no one is from anywhere from a lineage perspective beyond the circumstances of their own birth.