It doesnt matter if its from a dubstep , trance , techno or jazz page , if they are talking about the 'EDM scene' then it is of no interest and most likely is pointing towards the U.S which I would say generates its own watered down , mass produced 'scene' which is fed by europe. I dont know what this 'bubble' they speak of really is as I dont know a single person into this 'EDM' stuff they speak of. Its essentially talking about fans of Skrillex , Guetta , Tiesto , SHM and the like from what I can tell. Quite happy for that bubble to burst if thats what it is