Ah, here it is:
Personally, I'm of the opinion that the future of the artistic spirit which drove the best black metal is largely to be found outside of metal altogether, in music that jettisons the last vestiges of rock (Lord Wind, Puissance, later Burzum, the World Serpent acts etc.). The Catch-22 there is that those most in touch with that spirit also remain sentimentally devoted to metal (thus, Rob Darken continues releasing Graveland albums rather than devoting himself fully to Lord Wind), while those who grasp black metal only on a superficial or aesthetic level (Ulver) are more inclined to step beyond the limitations of metal, but lack the ability to turn that leap into something artistically relevant (and thus, they remain just as derivative OUTSIDE black metal as they were within it). I suspect that only circumstance and a sense of betrayal pushed Varg Vikernes to make that separation irrevocable. There is an ethic of loyalty in metal, and particularly in black metal, that sometimes leads to artistic self-immolation, and it's unfortunate.