To be fair it's not the uncommon proposed answer, so if he's not responding to the article specifically, in general he'll probably still have a point for a lot of people who agree with the tone.
I'm about 5 years older than the article poster. I haven't had unfiltered Internet since way before puberty, but I knew where my dad kept the tapes and magazines and I've had the Internet connection by the time I was 15-16. Either I was too young to care or old enough to know where to find it.
I don't think my parents would have added anything to either of our lives by filtering the Internet connection. They spent enough time trying to push me away from computers, which in hindsight I think they'd admit was folly since it was this "addiction" which I used to dig myself out of a childhood of poverty.
Anyway part of that time was used looking at porn, more of it on on-line games and a bit of it learning interesting things. Other than turning into a geek, I don't really think I'm messed up in any special way.
We now have two data points running contrary from each other. I see no significant evidence to suggest porn is really the problem it's make it out to be.