OK, but anyone who makes this argument should at least put some effort into thinking about how to define what is a social network, and what is an addictive game. It’s not that you’re wrong, but you need to think about the execution and making sure that the criteria has a strong basis in principle that can be used to justify the decisions on what to ban. Otherwise you’re just suggesting the impossible
You're right. Defining the criteria for marking an app as harmful might not be straightforward or easy. But we're talking about the education and life of the children. These difficulties shouldn't a preventing factor. Maybe it's easier to allow services and apps one by one when there is a need only. Whatever that's not, let kids have a phone with internet and everything that comes along.