"100 years ago" is a weird way to describe "ongoing harm as recently as... earlier this year."

https://www.npr.org/2022/02/18/1081872135/native-americans-p...

Or the US government's uranium mining on Navajo land continuing to poison people today: https://en.wikipedia.org/wiki/Uranium_mining_and_the_Navajo_...

What does mine placement have to do with a community's ability to store emergency firewood where it's accessible in an emergency?

The same genocidal policies that enable resource extraction with complete disregard for local populations are the ones responsible (intentionally) for the abject poverty that renders these populations extremely vulnerable to weather events. Most Americans cannot comprehend that this level of poverty exists within their borders.

For example, these populations have to be spread across massive ranges of completely worthless land, making infrastructure extremely inefficient even in scenarios where they have the financial means to invest in it whatsoever (which is also rare for all the same reasons^)

Well, that example was about a Navajo community. Quite a long way from the Pine Ridge rez. Very different people and culture.

They gave that as an example in response to the claim that the abuse of natives is historical and not actively happening. While it is not directly damage done to the occupants of Pine Ridge, it does demonstrate that the sort of injustices that destroy native communities are still occurring.