It's not about politics in the slightest - I should have made that clearer. Here's my thought process:
Black Metal has always communicated "the Sublime" (please don't ask for a definition of this, you know what it is);
Nature and the natural world are primary physical manifestations of "the Sublime", and are also primary topics of and inspirations for Black Metal (of the second wave - Emperor, Enslaved, Burzum, etc);
If Black Metal mirrors, by the conscious decision of the musicians involved or not, many and various aspects of Nature, it stands to reason that it could be a vehicle for the entirety of what Nature can teach us about how we should live our lives.
Any understanding of "the Sublime" must leave the individual in question with the knowledge that he, or she, on their own, is entirely and wonderfully insignificant, within the broader spectrum of existence(s). In the natural world, insignificant individuals come together to form groups (packs
of wolves, prides
of lions, whoops
["I was absolutely livid"] of gorillas) which, acting together, accomplish more than those individuals could on their own, both for themselves and, potentially, for their species. It stands to reason that a form of music which can
, definitely, communicate these things - not that it does, all the time - should therefore be seen to support "Collectivist" ideas, in as much as certain people actually want to be productive during their lives, and Nature shows us that "working together" with members of your own <group> is conducive to success.