Hmmmmm.... who to believe?
a qualified expert in the field who wrote an excellent book and cited tons of qualified verifiable sources?
or a random anonymous dork on the internet who makes ridiculous claims?
Discussion
As I said, if there is only one case of porn addiction in the real world, it doesn't matter if someone has a PhD and has written a book. He is wrong. Empirically proven wrong. So your belief doesn't matter at all.
It's like believing that the earth is flat. Your belief is cute, but the earth is still round. Reality doesn't care about your beliefs.