Thanks Zaki, there are some really interesting points here. I’m not sure I agree that other forms of art uphold safety and repetition, given the tendency of new art movements to be reactionary or revolutionary. It may make sense to frame Dark Art by that which it is opposing, although I feel we need to find a more specific definition of what that might be.
I think you have raised two separate and equally valid questions here. Firstly, whether the creation or development of an altered state of mind or thought in the viewer is an aim of dark art (much as it was for the original surrealists), and secondly whether shocking the viewer is a desirable or efficient means of achieving this.