Maybe people think talking about unvaccinated people here is irrelevant or inflammatory or something like that; I don't know what exactly ties these stories together in my mind, but I suggest that maybe it's technophilia, that there are people who love to throw technology at every problem. Or, perhaps the hate comes from the sense of certainty some people have in their information sources, and they can't empathize with anyone who may be suffering from false or ideological info sources. Instead such people must be stupid and trolls.
If it is a lack of empathy -- I think it's more likely a lack of sophistication -- I can see this same mode of hatred and blame we are seeing now, being directed at criminals back when those draconian laws were being drafted that put the deaf man in jail.