I think the definition of “abstruse photography” is basically “reinventing a familiar world” and “looking at an object from a new perspective.”
Most common photographs reproduce the real world, but abstract photographs take our eyes in different directions. Looking at the world in a less specific way, or maybe looking the object more specific, exploring new things, applying light and shadow in different ways, looking at shapes, and focusing on repetitive forms. In other words, when viewing the photograph, it allows  viewers to one step back.