I don’t think this is confirmation bias. Confirmation bias is putting more weight on information that support preexisting beliefs. If a continuity plan is activated and the passengers are unaware then that is a totally different thing. If the passengers are made aware of a continuity plan being implemented then Negativity Bias or the Von Restorff Effect would be more accurate descriptions, in which negative stimuli or unusual stimuli are more frequently recalled.
You’re right. I meant survivorship bias, where the survivors are the events that are bad enough for them to be visible to the public. Other events that are addressed by a continuity plan are “killed” and therefore aren’t visible.