Ah yes, the doctors and nurses, which ends up with the parents not taking their abused child to a doctor anymore, cause they absolutely have to report it. Same reason why doctors don't report drug usage to the police - they want to save your ass, not put you in jail.
Except for the very obvious issue here - it is a duty to report. So any small bruise, any indication (i e. A kid saying "mom beats me") needs to go immediately to protective services. Which then ends up with the kid simply lying for attention after you put the entire family through hell.
They still can report. The thing here is "they aren't forced to report every single possible instance no matter how small or fake"