Related…My daughter wanted a cell phone when she was 8, I bought her one.
I wanted her to be able to communicate if she was in distress, and that was balanced with the potential harm that could come.
But I told her, very firmly, "no noodie pics"
At first she did not understand, but as she grows, she is becoming more and more aware.
None of her group of friends disagree, they all say "no noodie pics", it's a thing now with the kids.
They know noodie = creep.
But if you don't tell them……what then?