As usual, without mentioning the insane ecological impact of the "creation" of such "natural" tokens. Bitcoin is no more natural than, say, an extremely power-intensive industrial process used to create a particular crystal.
If the Bitcoin camp is to be suspect of bias, so is the other side.
This is mining sites that we know about, because they are public companies in the US. I doubt that the stealthy, privately-owned miners in Kazakhstan are using cleaner sources.