Augustine had to deal with scandals in the North African Church and with bishops who refused to discipline evil clerics. Irish Catholics are suffering both from abusers and stony-hearted bishops.
But that grief which arises in the hearts of the pious, who are persecuted by the manners of bad or false Christians, is profitable to the sufferers, because it proceeds from the charity in which they do not wish them either to perish or hinder the salvation of others (The City of God 51)
God does not desire the death of sinners but that they be converted and live – even abusers and bishops. But God also does not want them to hinder the salvation of others, and that is what they are definitely doing in Ireland.