[Confusion]

Getting annoyed and telling people off doesn't result in fewer instances of dangerous fatalism, because that is not a very effective way of convincing people. It may as well have the opposite effect: "See, God is great, he even takes care of this smug bastard"

Similarly, getting annoyed when people say something false doesn't result in fewer problems, as you are unlikely to communicate in an effective way when annoyed and are unlikely to convince anyone of the falsehood. Again, it may well have the opposite effect: the non-occurrence of armageddon never dissuades a cult of their beliefs, but rather makes them stronger.

And if you say something like "Well, they should listen if they know what's good for them", then you show that the rationalization of your behavior is just a facade. Then you are not truly interested in preventing problems. If you were, you would try to be effective, not just right.