J. Golden
Heaven and Hell Records
Disclaimer: Please do not construe anything in this post as racist.
I think what happened is that in the early 90's, hip hop exploded in the US while death/black metal was sweeping Northern Europe. Thanks in part to the dubious culture shaping of MTV, and in part to some of the ridiculous excess of the 80's hair bands, hip hop became the genre of choice for rebellious American teens. You can see it even in suburban schools today: the black t shirt heavy metal crowd has been replaced by baggy jean wearing Eminem wanna be's.
While Europe isn't monolithic by any means, there is more homogeneity in each European national culture than there is in the US, at least IMHO. So it just makes sense to me that there has been a higher level of acceptance for loud, distorted songs about Thor in Oslo, for example, than in Miami or Atlanta.
I never thought of hip hop really effecting metal and it's popularity. If younger generation started going towards hip hop well I guess the better man was winning there or the better marketing. But I do think all the 80s bands i.e. Warrant, Poison, etc were getting old. Jani blames his death on Nirvana, I say that third album just kinda sucked.
Hip hop, pop, boy groups it is a totally different beast. Hell the idea of conplaining about stuff like a boy group never made sense to me because that shit has been around as long as rock n roll.
An hip hop is the last original movement to happen in popular western music so more power to it. I think the white man tried to steal it too and make it theirs like they did rock n roll.