I think comparing the social media usage/activities of teens to much, much older adults scrolling news is textbook apples vs oranges.
The positives don’t outweigh the negative risks of online exposure for young minds. The overall deterioration of mental health and self-esteem in youth is so much worse than we have ever seen. A 14 year old mind is not developed enough to be impervious to influence. I tend to refrain from being overly critical of parents today, but allowing young kids to have a strong online presence is a failure of the younger generation of parents. Increases in bullying, fear of missing out, incel culture, etc of social media are documented to be major factors in the decline of both self-esteem and attention spans. Not to mention the lack of social skills plaguing the youth due the majority of their interactions being behind screens. The worst part is the unfettered access by predators to children. There is no shortage of incidents of adults using socials to lure children into harmful situations via catfishing etc. 16 is a much more appropriate age for youth to have their own social media access. It’s unfortunate that parents are failing the children so badly that governments have to step in and ponder bans at all. As I said, the owners of the social media platforms don’t allow their young children to have access to social media. Why would anyone ignore that?