Indigenous is not a politically correct word for anything. It has a distinct meaning.
OED: Born or produced naturally in a land or region; native or belonging naturally to (the soil, region, etc.). (Used primarily of aboriginal inhabitants or natural products.).
Wikipedia: Indigenous peoples are people, communities, and nations who claim a historical continuity and cultural affinity with societies endemic to their original territories that developed prior to exposure to the larger connected civilization associated with Western culture. These societies therefore consider themselves distinct from societies of the majority culture/s that have contested their cultural sovereignty and self-determination.
Oak trees are not indigenous to Australia, and neither am I.
But RF - you might need to make the terms of your argument clearer to us.
I'm perfectly happy to wade into this discussion...
What is the significance of where your forbears were born?
At what point in the past is there a cut off? because if go back far enough we're pretty much all related.
If not Australia, where are you indigenous to Scarfman?
I prefer the OED definition, mostly because it is not politically loaded like the Wikipedia. There are many people who are not indigenous, in that sense (to just one place), particularly in Australia.
As you can probably guess, I don't have much time for discussions about "pure blood" in humans, whatever the situation....and how it can relate to rugby I do not know.