“If you haven’t made it as a DJ by the time you’re 35 you should quit,” Sven suggested, “Because the young ones are waiting.”

Don't agree with this notion at all. Age is completely irrelevant. I don't see anything wrong in somebody take up DJing for this first time at the age of 5 or 50!

Anyone with enough determination has a chance of "making it" in the music industry (whatever that means!), but surely this opportunity is open to everyone, no matter what their age or how long they've been playing.