Varg was committed to the cause as Euronymous and dead before him, but Varg's commitment infused black metal Satanism with an even more toxic and racist ethno-nationalism.
Not that Satanism didn't exist before, but it was always, you know, in secret or it was practiced very differently from the way my father practiced it.
But more importantly, I thought that they were imagining that, well, this isn't going to hurt anybody because there isn't really anything such as Satanism anyway, so we can kind of use this.