That is all fine, but the future (and sometimes even the present) belongs to young people. The point was, young people consume music very differently than previous generations and they find DJs to be fifth wheels to their listening experience. If that is the way they see it, it is only reasonable that they would question why DJs even exist at all.
What if Hot 97 decided to dump Funkmaster Flex and go jockless every night from 7 to midnight? I don't think their young listeners would be happy at all about it.