Also, can't they just… lie about their age on signup?
So Australia is trying to ban social media for kids under 16, which iirc includes twitter, instagram, facebook, ect. But you can go down quite a deep rabbit hole on what is “social media”. Reddit? Scratch? Or even wasteof.money? 
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For social media is crazy 
yeah, but you already use it for dating apps, so it kinda makes sense