OK, back to the point -
how it came to be
so shit.
I get the impression d'n'b has become an affinity group, a mutual support network, rather than a musical movement, in the same way that people get into heavy metal, or goth, not so much for the music, but for the camaraderie. There's a big difference between that kind of "scene" and the musically evangelistic "scenius" that's driven jungle, garage, grime and dubstep. The music per se is secondary to having an identikit, cut-out-and-keep, ready-made circle of friends. In fact the music, or at least the
innovation in the music, is something of a
distraction from the repeated ceremonial formulae of the socialisation. Obviously, its becoming "student music" is part of it, but that's not the whole story, because it's not just appreciated by students. Rather it's become like a druggy version of Britrock: unthreatening, easily consumed and socially acceptable. While it's really fast on the surface, running at around 180 to 190bpm rather than jungle's 160-175bpm, you can bounce around to it at half speed and it's very comfortable - raving with minimum effort, with 80-85 bpm being not far off Oasis' slug-rock speed. Black rhythms (and black people) have been excised because all that funk and syncopation are too hard to bounce along to, and the black voices are just confusing. That endless deadening oompah-oompah two step beat sweeps all before it.
So it's a classic case of a product crossing over to a mainstream audience with totally different needs to its original customers, and in this case, utterly hollowing itself out in the process.
BTW, I could say that saying dubstep is like a cheap copy of 93 UK Dub shows how little you know about garage, and dub, but that would be churlish

.
BTW 2, I just got a cheap thrill just by writing "93 UK Dub" all in one sentence! .*.93.*.