It's literally a term only people who dislike dubstep use. It's not a real genre.
Actually, I do have to agree that it isn't a real genre, but one thing; dubstep can be anything, from a chill, slow, relaxing tune to a 3 minute overload of screaming wubbles. We're all just stating our judgmental decisions, but the point is, just listen to the tunes you like, that's all.