The things that's unclear to me still is if she even knew about it from early on.
Like... I know where I was born but only from what I've been told, as I have no memory of that time.
Reality could be much different than my understanding of it.

From what I understand, she was still raised by indigenousparents from that tribe, she still grew up on a reserve with most of the difficulties associated with it. She's been an activist of indigenous issues for longer than most people on lemmy have been alive.
She still grew up in her tribe's culture and as such I think her art is still representative of indigenous roots. If anything, it highlights that the hardships of indigenous people aren't coming from their blood, which would be racist nonsense, but from the shitty position the rest of our society puts them in.

I understand how an actual indigenous artist might be angry in some sort of lost opportunitykind of way, but I also understand that her family must feel really fucking insulted.

What's the next step? Requiring DNA testing before giving grants money to indigenous artist doesn't seem like a positive to me and I'm fine with indigenous people doing their own gatekeeping into who's one of theirs instead of some bureaucrat somewhere.

Supporting more indigenous artists shouldn't require burning down what she's done.