"Reason always stands in need of being purified by faith: this also holds true for political reason, which must not consider itself omnipotent."
The OWG scenario usually includes a virtually omnipotent ruling class. This Pope has a much better understanding of human nature than you seem willing to give him credit for.
‘Which must not consider itself omnipotent’ — but it WILL, given human nature. And who is going to run it? Some jackanapes from Zimbabwe, perhaps? Or would they have to be Christians?
Never, I say...