Watchtower's failure to have elders encourage victims (or their guardians) to report their victimization to trained secular authorities as a matter of policy has never made any sense to me. That they fail in this no-brainer says plenty about where Watchtower's priorities lay.
As for elders reporting, Watchtower's failure to have elders report this as a matter of policy it is absurd for reasons given. If doing this is contrary to some supposed scriptural principle then doing it would be wrong no matter what the law demanded. But when local law requires it Watchtower policy does have elders report these allegations. So there is not supposed scriptural principle at work suggesting the act of elders reporting is somehow wrong. I listened to Jackson, and others before him, talk about family headship this and family headship that, as though family headship presented some supposed biblical principle making it wrong for elders to report child molestation to authorities. But I never heard one articulate why this was the case. Just lots of scripture talk without ever one time articulating precisely what it is about family headship that prohibits elders from reporting.