All you have really said is that all forms of music such as trance hip-hop et cetera required skill to make. No one is denying that there are other genres of music that require musical skill. But the DJ does not create any music. A DJ plays someone else's music. DJ stops and starts someone else's music. DJ fades in and fades out someone else's music. If the DJ is truly a musician. Then take away other peoples music from his set and let me see him or her make music.

You see the heart of this discussion and the problem here, is that you need to define the what a musician is . a musician can actually create original music, whether that's playing chords or melody line or rhythm or singing or all of those forms. What does DJ to create music if he or she does not already have someone else's music to work with?