You might say "well to protect kids". Except, there's a massive body of research proving that they make things worse, certainly on average:
https://sci-hub.se/10.1257/aer.97.5.1583
Massive negative effects, from reading scores, to later earnings, to subjective happiness (yes, really, kids report more happiness while being abused than in youth services), to later crimes.
So no youth protection is better for everyone. This is obvious in the case of scandals and the many "accidents". But it is true in general. And it is true for everyone. No child protection is better for the kid, for families (obviously I guess), and due to the increase in crime if we destroyed youth protection causes, it is better for society itself. If you start checking, you will find that youth protection is involved in the raising of many of the worst criminals we've ever known.
Even child psychiatry and "special needs schools" ... well. Comparing symptoms upon entry and symptoms upon exit paints a very clear picture that really questions why they're allowed to exist.
https://sci-hub.se/https://link.springer.com/article/10.1007...
And then of course there's the many scandals that these people keep and keep and keep producing. Abuse within foster families is higher than in families in youth protection services. In institutions it is a lot higher.
So they don't protect kids.
And crimes are astronomically higher in both foster care and institutional care (and youth psychiatry).
So they don't protect society against those kids either.