I do not disagree with you. It's similar to how everyone thinks of my people as one bunched together group of Native Americans, whereas in reality, there are many Tribes of many different flavors, beliefs, and 574 different ethnicities.
I don't have a damn clue what a Cherokee Indian subscribes to, or what language a Cree Indian speaks, and I couldn't recite more than a handful of names out if the 250+ tribes that are federally recognized.
I know the history and culture of my tribe, Lakota (also known as Sioux but thats a group of tribes and also a rude thing to call anyone).
So I get your point and agree with it. My comment was mainly a joke.