Yeah.....and cars, like the Cherokee. We really don't care for the habit, to tell the truth. Same with naming horses and dogs after us: Dakota, Navajo, Cheyenne, ect..
You'd never hear someone naming something- The Italians, The Germans, The Jews, ect....
Sports mascots, too. yeah, that's not racist or anything. Why don't they have the Cleveland Negroes or the Washington Chinks?
I'm actually surprised you noticed. Most white people don't see anything wrong with it.
Navajo (my tribe actually successfully sued Urban Outfitters to stop using our name to market their stuff)