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Plenty of people drive drunk, use electronics while driving, etc. and harm noone. Some kill children. At a certain point you have to decide where to create and enforce community rules of engagement to avoid moral hazard. They're not easy lines to draw on low information.
This case is much trickier, because transmission chains amount to a group of people inadvertently and more-or-less unknowingly cooperating to maim or kill the weak and old. The path between going out for a few beers and killing a diabetic two towns down is totally obscured.
