"This is clearly damaging behaviour."
Bullshit. I spent my 20s playing video games after work every day and weekend, watched tonnes of porn, same as the people in this article. My 30s are full of children and well adjusted family life. Its like anything, some people grow out of it, and some let it take over their lives.
You should say, TO SOME PEOPLE this is clearly damaging behaviour. I would submit that those are the same people that would easily find something else to damage themselves with if not for porn and video games.
In summary, its just a bunch of hot air. In past ages these young men would go to war, join a cult, or bury themselves in their work.
Obviously you want your kids to have limits on their computer time, but once they are in their 20s they are enough of an adult to realize what they want, make their own decisions. Drinking, drugs and video games is as good of a way to spend your life as any other when you have no real obligations.
Society doesn't really make many productive things for young men to do in the evenings. The two I can think of that are the most popular when i was a 20 something were waste money on clubs/bars or exercise. You cant exercise more than a few hours a day, and most 20 something are dead broke because of all the income inequality in our lovely world. A 20 year old with no family has very few time sinks. What is the alternative? what should these kids be doing? buying $7 beers at the club trying to impress whores? Volunteering at a church? get real! Video games are cheap, porn is free. That's why they are successful and people are into them as hobbies. Not because peoples brains are changing or some such bullshit. Im pretty sure guys always liked playing games and naked ladies.