i think the only reason Various Production get grouped with dubstep is becasue dubstep gets name-dropped for no reason whenever critics write about them. but i agree, the micro-genre labels have become increasingly pointless, partly because it seems people are getting tired of it, and partly because the music itself doesn't seem to care too much. today there's a certain idea of "dubstep", "minimal", etc, but i think the names only stick because of a few broad musical qualities (low-end, crunchiness, etc) and the scenes that form around them. this can only be a good thing IMO