Because it took over 50 years for the Horror to be brought to light, and in the rarified club of the Clergy most of them all knew for years and did nothing.
The victims were abused for years and are still being abused by the likes of cardinal Phoney Mahoney.
Cardinal Ratzinger would have received all the reports of abuse from all the bishops around the world and he let the children continue and left the Criminal Priests in place to do more damage.
He allowed, the Leader of the Legionaries of Christ, Father Dogollado to avoid being challenged even though there was 9 men with credible sexual abuse allegations filed against him by lawyers in the Vatican.