I agree, Parr's is well worth thinking about. Coming up with good ideas is hard enough, without considering 'new project ideas shot in new ways.' However, we are human and so some of the 'traps' are not necessarily bad for us as human beings, as he points out.
Maybe it is a question of opposing forces: that which we can relate to vs. that which is almost counter intuitive and so new and challenging (and so hard to relate to for many). The challenge is to shoot images from a 'new perspective' that are still accessible enough to work for an audience, while maintaining an edge. Perhaps only a handful of people achieve this in the world every decade, so I don;t think Parr is at all suggesting other forms of more conventional work are invalid, only that we should all seek to push the envelope.