I would question why an 11 year old would remain on the internet, if the situation really is that bad. So if there are 11 year olds on the internet for a prolonged amount of time, it seems likely to me the situation is not really that bad.
The irrational decision to return to a environment where they get burned, again and again? Why?
I am not talking about signing up for Instagram. I am talking about staying on Instagram after a flood of sexual harassment, as described in the article.