I think of the two big black metal deaths as kind of an inverted form of the Christ story. People have a spiritual fetish for martyrs; this might be because of the inescapable Judeo-Christian framework of our world, or perhaps it is the desire for real heroes who can't be criticized for being "false." Dying (or killing in the case of Varg) for something you believe in gives it validity and made the ideas of both Christ and the black metal bands much more real, and also provided a myth in which to embed the ideas. Unlike Christ though, these deaths were done BY the musicians, instead of TO the musicians, which makes it almost a blasphemous retelling of the Christ story. While the music is not directly connected with the deaths, the extremism certainly played a role, and I think we can all agree that black metal would not exist in the way it does without those necessary sacrifices. Although, there is another way to look at it. Perhaps these young men act more as sacrifices than martyrs, sort of a combination of pagan ritual sacrifice and Christian-style historical mythmaking.