Comment by joeseeder

I think you are completely missing the point why they are ending up on these platforms...

Try to imagine a world where "appropriate authorities" do not exist, as a first step.

Places where these materials get captured are not first world countries with respectable, recognised law enforcement.

Most of the people these sharing atrocities are aware only about platforms we call social media.

For them these are the only ways they know how to make it public, for the world to see and hope we will act.