Earlier quoted context omitted.
There's another factor in this, which makes it hard to change: For the people in child welfare organizations, for social workers, for doctors, for police, for judges to change their mind about current and future decisions requires them to change their mind about past decisions. The necessary implication is that many of the people they have persecuted in the past were, in fact, innocent. It requires them to admit that…
There's also the normalization of seeing and hearing awful things. After a while of being exposed to the wretches of humanity you begin to see the signals for the wretches everywhere. As the warrior poet Maslow put it, "if the only tool you ever have is a hammer, you tend to see every problem as a nail."
This can go quite far, with some experts stating that the histories reported by parents and caregivers bringing a child to the hospital with some injuries are always falsified. This can surely happen, but a foundational tenet of medicine is to listen to the patient/parents.
I've seen experts concluding to abuse in 100% of their cases, including those where children hah obvious, DNA-proven genetic conditions causing the observed injuries. Fortunately, some judges remain reasonable and act as "gatekeepers" by exculpating parents and caregivers despite affirmative opinions by reputable experts. But many don't.