I don't know too much about DJ culture and do not hang around in clubs, but I have seen some of it in action. Mixing existing tracks to get something new is a skill, but it may be different to making music from scratch on an instrument. If you just want to get a crowd moving, then it may be easier to rely on beats that you know will work. I may be old-fashioned in my tastes, but then I like to see skilled musicians in action and can aspire to creating something fresh myself. I may never master the drums, but I am making progress considering that I started late.
!BEER
RE: When Does a DJ Become a Musician?