Normally the vice president wouldn't get this kind of attention. She's getting this attention because Biden is so old, and he is standing again for election. Vice President is a bizarre non-job in the US system but also very important because of its potential.
Kamala Harris is being attacked because there is a serious chance she will be President.
On the one hand she is being attacked and undermined because she's a woman and she's black. But on the other hand it is an election and it's right to think about the vice president, and particularly one who may actually be President.
I find the logic behind this uncomfortable. This may help people try rationalise issues in the US or other colonialised regions but it's actually a fairly absolutionist view of the issue - the chain dismisses any argument or discussion about what it means to be indigenous vs a settler as invalid.
At first glance that may not seem to be a big issue but lets invert this for a moment: I'm a white person living in Europe; does this stuff apply to me too? This absolutionist view is problematic - it'd also excuse the anti-immigration rhetoric of white nationalists in my continent. I'm an "indigenous" person in my country but I would not argue in favour of this chain or logic.
I can understand the motive - a deep sense of injustice and dismissal of one group by another "majority" group. But this is not the solution - this just stifles discussion and frames any discussion as if there is no valid opinion that does not conform to one narrative.
Indigenous vs colonial/settler/immigrant issues are not simple, they cannot be reduced or distilled in such an absolutionist way. You do not solve injustice or right the wrongs of the past by replacing it with a new type of injustice.