You miss the point (again), denglish4: it matters NOT whether  Native/Aboriginal/First Nations writers--just like Chinese-Canadian writers, and Muslim/Syrian refugee writers--have ever created fiction that reflects "misunderstanding or mischaracterizing" whites,  or anyone else of any other racial or gender origin.  

The point is: they have the RIGHT to do so.  Morally, it can be argued (and I'd argue it!) that writers have a DUTY to write about anybody they choose.  

And that's called freedom of expression.