I enjoy Peter Woit's writing and especially loved his book "Not Even Wrong." I also enjoy shitting on string theory from the comfort of my armchair. Maybe this is "productive," in the sense that getting people to stop investing in string theory will get them to work on investing in something else, but again from my armchair, I just don't see what positive work is happening. It feels like there are not enough holes in the standard model that need plugging and no big theory trying to supplant it or handle gravity gaining ground.