I agree with much of this but not all of it. In particular, he is correct that this will be seen as an opportunity for those on the “left” and the “right” to continue to bash at each other, when it is clear that the problem cuts across all groups and sub-groups in the Church.
As to what appears to be him main point, I am certain there are many “de facto atheists” in the clerical ranks. But I also think there are those who, while believing Catholics, turn a blind eye to this behavior because the either believe there is nothing wrong with it, or because they think it is not so bad. It is certain that many (most?) authorities in the Church treat the abuse of young men and adolescents as a breach of a vow, rather than as a serious crime. I suspect that many also justify this behavior because that is “the way it has always been.”