Disagree.

First off, we now have Controllerism ( see: https://en.wikipedia.org/wiki/Controllerism ).

Controllerism can be vastly more complex than Turntablism, requiring custom software and several input controllers.

Second off, digging for digital tracks is just as hard ( if not harder ) then it use to be digging for vinyl tracks. There is so much new digital music available coming out everday, that being able to dig out a good not-very-well-known track is like finding a needle in the haystack.

Are some DJs simplying hit play on a Top 40 tracklist in Traktor? Sure. Does that mean the art form is dead or doesn't have room for vast improvement? Not at all.