Not to be offensive or anything, but this is such a non-issue. How on Earth non-Native writer could know that Natives might find these words offensive? Clearly, no offense was meant and if you still choose to take issue with them, then it’s your problem quite frankly, nobody else’s.
Oh and that Overwatch thing. You say Natives aren’t talked about that much. Well, this is why. On one hand you want to be included, on the other hand people like you complain about cultural appropriation (it’s not a thing, quit trying to make it a thing). Well, you can’t have it both ways. I’ve actually seen an article written by Native American who was actually very happy that Blizzard added that Pharah skin to the game. She felt honored in a way that a small part of her culture was added to the game. So it seems to me that once again, if you choose to take issue with it, it’s your problem and yours alone.