How would you know what lawyers are trained to look for?
Probably watching TV lawyers. I gave up watching "How to Get Away with Murder" because I could not suspend enough disbelief long enough to get through an episode. Apparently the writers have never heard of discovery, and the ethical violations would get everybody involved disbarred.
Band, I agree with your prescription for the WTBS. If the instructions to the elders were "if you hear about abuse, turn it over to the police immediately," and they did background checks on anybody that was going to be around some one else's kids, their legal problems would largely or entirely go away.