Minimalism can work well, as it does in the cases of Burzum, Darkthrone, earlier Graveland, etc. But it can also make for a boring, frustrating listen. I really realized this again listening to the latest Wigrid CD. If the same slow paced, mediocre, minimalistic riff is repeated endlessly, I find myself itching for it to change, or for some variation in the sound to occur, and I look forward to the end of the song. I found myself feeling the same way when listening to some of Nargaroth's work, as well as other mediocre, minimalistic, monotonous black metal. Perhaps minimalism only works if the riffs are actually of high quality, and the right atmosphere is created. I can understand why some people do not like minimalism in music, as not every band can pull it off with conviction.