[Mordisquitos]

Let us assume that:

    1. On average, it is a net negative for under 15s to participate in Instagram, TikTok, Xitter, YouTube, Snapchat, etc  
    2. On average, it is a net positive for under 15s to participate in HN, old-school forums, and the like.
    3. It is not possible to legally differentiate services referred to in points 1 & 2, so a ban must be all-or-nothing. 

Under those assumptions, the question becomes whether the overall net positive of allowing under-15s to participate in HN and old-school forums outweighs the overall net negative of allowing under-15s to participate in Instagram, TikTok, etc.

Given the relative number of under-15s participating in each category of services, do you think that is the case?