I had this thought too. Just because I prefer the work of Callahan, Evans or Christenberry, that doesn’t mean conceptual work doesn’t express a personal, authentic perspective of the artist. For instance, Crewdson’s work is some of the most esoteric, conceptual photography out there, but I’ve heard him say his tableau are directly the result of dreams he has.
In the end, it feels like it all hinges on execution.