What's not needed is blanket abuse of social workers.

I can't see that there was blanket abuse - just condemnation of the particular people involved in this child's death. ("These bastards involved in this case")

I know that there are many good workers in the field - we simply hear about the ones who do not pick up on what seem to be obvious signs of abuse. It happens, as is demonstrated by the death of this child and others before him.