Nothing is Certain – Cromwell's Rule

I here defend the proposition that absolutely nothing is absolutely certain, where certainty is understood as a flat 0 or 1 as a Bayes prior.

Pope Francis, Thomas Bayes, and the Existence of God

Should liberal atheists find their Bayesian level of rational credence in the existence of God to go up because of the election of the pope?  Should conservative theists find it to go down?