Doesn't at some extent there seem to be a pendulum swing between:
1.) the acoustic musicians that don't use any electricity at all to play
2.) the DJ, who uses electricity to play EVERYTHING.

Those of us in between that use some combination of the two - and the closer you get to using more sequencing, electronics, and pre-programming, the closer you are coming to ( gasp !!!...) the DJ !!!

Even if you distinguish by the 'amount of talent' it takes to do those things in between, there are a number of DJ's who take 'performance art' to a whole new level, and they consider what they do to take quite a bit of talent (in a different sense) also. They're often using MIDI controllers or sequencers, and doing much more than just spinning vinyl or CD's as in 'the good old days' as I'm sure some of them refer.

And whether or not it is your cup of tea, the DJ can make the most music with the widest variation for the lowest cost. For those that more just listen and dance - just as good. Different art, different talent, the people paying don't typically know, care enough, or can afford the alternative.