I think the same thing about some parts of this vid and a bunch of DJ stuff too. They have been steadily moving away from the musical enjoyment and worrying more about how technical the stuff is they are doing is. They try to showcase how good they are at makin different sounds. A really good scratch dj will watch something and be like oh my gosh that record juggling(hard to do) is great and I'll be thinking yeah but I dont wanna listen to it while driving or something. Might be because of DJ contests awarding the more technical people instead of the most musically entertaining. The DMC contest has the best in the world enter it but I usually dont like the entries, I thought this was a creative visual change from the norm.
Example of record juggling. Confusing and hard but not the most musically entertaining, or not to the majority I would think.