I enjoyed that, not so much because of the factual evidence presented (which at times is shaky. A few instruments are foreign? I guess this is a striking blow to some people who would stop using guitars because it is a 'my pals instrument', but sadly, not the NSMetal scene by large, where they'll conviniently forget any historical evidence that doesn't work out for them) but because he felt the need to write this. It's honest and thought-provoking, and I guess correct in the main theme that non-aryan influence is inescapable. Given the space Summoning holds in the black metal scene, it takes a bit of balls to write this. I like metalheads with balls.
It is interesting to me how he sidesteps a whole lot of talk about 'blood heritage' and such, to which certain people go to absurd biological-theory ends to justify, by saying what a normal person would: "I've met and liked jews blacks and arabs and I don't see any difference between them and me." I feel the same way.