Porn is never, ever a cause of problems, and when there are problems, porn is a symptom

This is what the psychologist David J. Ley Ph.D. says referring to the Nofap phenomenon. I personally think that that he lives in another planet and that the pornography is indeed creating a lot of problems. What do you Think??? this is the link: https://www.psychologytoday.com/blog/women-who-stray/201503/the-nofap-phenomenon