Sure, this crowd is going to push back a lot. And it's prime material for jokes. But, in short, a lot of web addicts have underlying problems of which excessive use of the internet is really a symptom. People get legitimately addicted to all kinds of things, and the internet happens to be a completely ubiquitous, invasive entity... so I'll be curious to see if this group is capable of weeding through this primary symptom with an eye towards lower-level issues.
At the most extreme end of the spectrum -- and sometimes that's all an addiction is, normal behavior taking to an extreme -- they'll have to deal with people who might use the internet to escape all human interaction, who always use pornography in lieu of meaningful relationships, who have trouble separating fantasy violence from real life situations in which violence has consequences, who have general-category neurological issues like autism, aspergers syndrome, etc.
On one hand, in light of this, a kayak trip is a joke. On the other hand, sometimes these things are all it take to get people thinking about bigger issues, especially if they can be directed to long-term, more appropriately fine-tuned help.