"we, Canadians, don't belong in our own country, are beholden to aboriginals,"
First Nations are "we Canadians" too.  And yes, immigrants are in some respect "beholden to aboriginals" - I doubt that your ancestors who arrived in the 1700's would have survived without direct or indirect assistance from FN people.  
And if you think telling FN stories will diminish you & your families' "accomplishments and contributions", you must be pretty insecure in those "accomplishments and contributions".