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.