One of the problems with porn is that it's so easily accessible. With alcohol or cigarettes or dieting it helps to have the thing out of site, ie don't buy it. But with porn, you can hop on any of the many available devices and in seconds get access to new videos every day. Also porn is very easy to hide. it's a lot harder to hide cig smoke, being drunk or high.
I think that's the beauty of this app - it has a strong blocker that makes porn not as accessible and the community aspect makes it hard to hide.
To use your example of mild boredom: boredom is felt by everyone yet most people choose healthy choices over addictive behaviour. Is there simply some luck in how we are exposed to an addictive experience or do some people seek addictive rewards to overcome some greater pain?
In my experience, kids who has plenty of access and exposure to multiple different hobbies tend to chose to spend their time on hobbies rather than passive consumption. I know one example where the parents goal was a minimum of 2 hobbies at any time when the kid grow up so that if they lost enthusiasm for one they can always refocus on the other. Together with school activities, homework, and dedicated (and planed) social time between the parent and child, there simply isn't much time to choose passive content consumption.
Every family is different and it is not a universal cure for anything, but I think it demonstrate that kids do not simply choose passive content consumption out of an addiction. They chose it when it seems like the best option among the accessible/experienced alternatives.
I only partly agree. I have two children. We are loving parents and provide them with a stable house, lots of food, plenty of attention. They have friends, toys, games, books, musical instruments, bikes, and a whole neighborhood to explore. We are an extremely typical middle-class household.
But left to their own devices, they will happily spend every waking hour in front a screen, watching videos or playing video games. There most certainly _is_ something incredibly mentally addicting about passive content consumption. It doesn't need a root cause, just like you don't need one with alcohol and other substance addiction.
(And because this is HN, I am obliged to point out that I'm not saying media addiction can't be triggered by some other factor. Only that a trigger is not required to cause the addiction.)