It's an addiction to the way news is currently produced.
It's entirely reasonable to spend an evening a week reading up on tech news. It's not reasonable to have a compulsion to check the news whenever you have a down minute.
I'm guilty of that myself, I'm currently writing this while a program compiles but I wouldn't wish this on a developing mind.
Besides, there are other places where news and the internet is available, why shouldn't places legislate away having that 24/7 on smartphones during school.