This is obviously a hit piece, and humorous considering it is probably written by those who see no harm in pornography and actually consider viewing it as healthy - the perverted left.
The study also showed that Evangelical youth in highly Evangelical communities are watching more pornography than similarly religious youth in non-religious communities, but the effect of a religious community is more pronounced on the porn-viewing of non-religious teens than religious ones.
So ... the upshot is small, evangelical towns contribute to more teens watching porn, but non-religious teens in those towns are the ones watching the most.