The author is making a specious arguement. That said, it is very clever. It’s purpose is to try and appear to be defending the Church while driving a wedge between Santorum and Catholics.
We all know that there was a failure to weed out the homosexuals and pedophiles from the seminaries. This is not the failure of the Church as an institution, but of people. Steps are being taken to change this.
No, this is a clever attempt to drive a wedge between Catholics and Santorum.