The reason it's important is because if you either think all such depictions are bad and I can write off this thread as being unrealistic in expectations or you don't agree they are bad and you are biased in your ideology and you are not holding everyone to the same standard.
I have no issues deciding whether something breaks my moral compass and is racist. I take into account motive, context and other factors such as time and place. For example a stand up comedy special with taboo topics might be offensive or racist but in the context of a stand up comedy it's purpose isn't to deride. Also I do not agree the story of a Native American that owns a casino is racist or bad in itself nor if he is an antagonist. I think such notions of lazy Native Americans are antiquated and an opinion wouldn't form or change due to their portrayal in 7D2D.
I understand what you are saying. I just don't agree with the premise.