Stuff like this and the “base” he has created give off pretty harsh trump vibes. Here is a link confirming for those wanting one. Sorry I did not include it originally. https://www.cbc.ca/amp/1.712106
The etymology or aboriginal is basically “comes from away”; kind of Eurocentric. Indigenous means “comes from within a place” etymologically so while it is kind of semantic it’s obvious which one is the better choice. Many indigenous people however prefer ‘Indian’ because it’s how First Nations people are referred to in the Indian Act.
Aboriginal is “ab origio”, literally “from/since the origin/beginning”. Already the Romans used it in the sense of “there from the very beginning”.
Indigenious is “indu gignere”, “begot within”. The “place” part is implicit. More of a “native” thing as in “natively born American” but the meaning shifted from the original Latin.
Practically, nowadays, they’re synonymous. Over here we use “autochthon”, literally “self earth/soil”. Also used in geology and biology. The constitution speaks about “national minorities and ethnic groups”, going by the last recent arrivals 600 years of living here as an ethnic group suffices for autochthone minority status. Though in our case there’s no settler-colonials which of course changes the equation.
“Aborigine” is not “comes from away”. I don’t know where you’re getting your etymology from, but it comes from the Latin “ab origine” which means “from the source” or, in context, you know, THE ORIGINALS. (First used, incidentally, to refer to the people living in what is now Italy before the Romans took it all over.)