DO they even call themselves black metal any more? Typically, when a band sells out as bad as Dimmu have, they attempt to pass themselves off as black metal for maybe a couple of years tops, but then get sick of all the abuse (and, considering this is black metal, probably death threats too) from people who see through the bullshit, and come out and say that they're not black metal. From then on, it's the part of the mainstream music press and the idiot fans to propogate the idea of them being 'black metal.'
I'd be more happy if the band, all their fans and any other idiots who call them black metal would just die.