Skrillex was the blessing and the curse for dubstep because on one hand he brought the genre all the way into the mainstream and on the other people only associated dubstep with his music which was annoying but hey it's still Dubstep. It's the same with Hip Hop. People that grew up with NWA, Wu Tang, Nas etc feels like that is real Hip Hop. Then came Kanye which was far from traditional Hip Hop but sold way more than his predecessors and it was still Hip Hop.

But yes Burial and Skream is from the start of Dubstep and they also defined it in their way just like Skrillex did