Morality aside, the concept of "herd immunity" means it works differently. A society (or, a population group) allowing anti-vaxxer nonsense is self-defeating b

Morality aside, the concept of "herd immunity" means it works differently. A society (or, a population group) allowing anti-vaxxer nonsense is self-defeating because their people will die out while a neighboring society that does not tolerate such nonsense will live on and prosper. Yes, this is a comically simplistic view, and shouldn't be taken seriously. I'm just pointing out that the pseudo-Darwinian "let them die" rhetoric actually means "let us die".