Excuse you, sir, I was in band and spent half my time trying to not get hit by the Indianettes' flags while marching.
I keep seeing people go "did no administrator see this dance before they went to Disney??" and the answer is yes, of course they did. First off, PNG has been doing that dance and that song for generations, despite MANY calls from Native tribes to stop. Second, they've done this routine at Disney multiple times over several years (7-8 times, I think), so it's a little disingenuous for Disney to act like they had no idea what was going on. I also know for a fact that they wouldn't let the Indianette officers wear their headdresses, so again, they at least knew that the mascot is the Indians.
Anyway, what a lot people outside of TX don't get is how insular that community is, and how very Friday Night Lights it is when it comes to football. Generations of people have born and died there with no one even moving out of the county, and on top of that, the Native songs, dances, traditions, etc that they've appropriated are heavily intertwined with the football team. And the fact that they try to justify it by saying they are honoring Native Americans (which I think most of them genuinely do) in no way mitigates the fact that it's still racist as hell.
I hope that one day the staunch defenders of "Indians" as a mascot can realize that they can still have school pride and community pride without being tied to that mascot. I proudly wore that shit and sang that song when I was there, but now I'm grown and see that things need to change. When you know better, do better.