It's being torn apart by experts every day, it was highly criticised when it was announced and hasn't got any better since then.
Addiction was measured at 20 hours per week. That's less than 3 hours a day. Yet when questioned on what makes it an addiction compared to other activities and pastimes very little was presented.
Think how many people watch more soaps than that? Or reality TV etc.
Sadly this is one of those times where they are wrong and it is being used to extort more money from health insurance plans in the US.