I picked this song cause it was my last played track lol....
but anyways, if I play this track, and turn my midrange eq allll the way down, the difference is not as severe as the turning of either the bass eq or the high eq. You lose some meat in the claps, the impact of the kicks, and the lower ranges of the hats. The difference is definitly there, but in comparison to cutting the highs (hands over ears sound), or the bass...
EDIT
Basically all I'm trying to say is maybe DnB (mostly) and dubstep (only sort of) kind of evolved.... to fit into the nook that existed during their origin. Old school jungle became hugely popular in the early 90s, and although I'm not really qualified to make any propsed assumptions about technology at that time (I mean... I was barely born. I'll do it anyways

We talked about it in the david floorstander folder. People were mastering tracks on a standard bookcase speakers... I feel like it might be feasible to say that early producers could have been doing the same thing. And thats how we got to the sound we hear today (in a more refined manner).
maybe?