I disagree pretty hard, particularly when the history in question is the first contact between cultures. It is European American history as much as Native American history. It is both of their story to tell. There is obviously a difference in power dynamics between those two parties, but to categorize the entirety of media exhibiting the history wherein those cultures contacted as exploitative or appropriation, just makes no sense. And discouraging that sort of media just lends to even more ignorance than we already have.

Inaccurate, whitewashed, insensetive, malicious, or otherwise disrespectful depictions of cultures and history are a problem. But accurate depictions of history, particularly of or involving your own culture (though I would argue that it doesn't matter the culture if it is accurate and reapectful), are educational, representative, and not something to discourage. And they are not exploitative unless made at the expense of someone else.