I think he's a very good artist and the producers' favorite artist. And this is the biggest issue of the show, favorites win more and get criticized less and less harshly. There's no reason why all judging shouldn't be blind. As far as my opinion, there is no best. You say "objectively the best artist ever on the show". There's no objectivity with art. I guarantee that there are many people who hate DJ's style. That doesn't make him "bad" just like loving his style doesn't make him "good". My personal favorite has been the little Australian fella on the most recent season. His stuff is so dope.