There's more to djing than being a musical jukebox.
I've seen some atrociously lazy ableton dj sets. Where the dj might as well have just sent their laptop along, and stayed at home.

There will always be appeal to listen to a variety of different productions. Plus ableton has just been integrated as another tool in some of the best dj setups - thinking specifically of Ruskin & Hawtin here.

Ableton is just another tool to be used. Its not a direction in its own right. In the wrong hands its just as boring and dull as any other tool.