[SpicyLemonZest]

You certainly can't tell people not to be upset! Every death is tragedy; people have a right to be upset even about rarer causes of death that are harder to mitigate. (From personal experience, I can tell you that anyone who's seen an alcoholic family member die learns to sympathize with the Prohibitionists.)

But it's not a betrayal to acknowledge their pain while recognizing nothing feasible can be done.