Even with Bayes' theorem, if your prior is zero, you can ignore any evidence - no matter how strong - that doesn't absolutely require the hypothesis to be true.
That’s why they say Bayesians can’t be atheists by definition. At least that’s how all atheists in my stats 101 class starting calling themselves agnostic. Another way to put it I learnt in a finance class : financial models behave alright, the problem comes from our lack of imagination, i.e. assigning a null probability to a future event :/
Bayesians are atheists, they just happen to believe in Roko's Basilisk, which obviously is nothing like a reinvention of the devil. Remember not to think of it since we can't prove it won't torture an infinite number of clones of you forever!