Granted, a Bayesian might hold that rationality places no constraint on probabilistic judgments beyond coherence (or conformity to the probability calculus). Then as long as the strict atheist assigns probability 1 to God's non-existence alongside his or her assignment of 0 to God's existence, no norm of rationality has been violated.
Furthermore, an assignment of p = 0 would clearly block the route to Pascal's conclusion. For then the expectation calculations become:
E(wager for God) = ∞*0 + f1*(1 − 0) = f1
E(wager against God) = f2*0 + f3*(1 − 0) = f3