pretty straightforward. the amish have been with us from the beginning, not contributing to society, but live and let die that's what i always say. this allows them to continue to do that, while people that i actually interact with need to be vaccinated.
note: i don't count the time i stopped near my parents house at a scene of a buggy on the side of the road where an amish guy was beating his not-dead-but-probably-wanted-to-die horse, all skin and bones that it was, when it was laying down because it couldn't get up... i left, there was nothing i could do, i didn't have a buggy with me
i'd go more than that though as i'd demand that any immigrant who wants to come here needs to be vaccinated, and agree that all their children will be vaccinated. here in minnesota, somalians are the root cause of most of this stuff, and i don't even have a child and i think about it if i did and that happened to my toddler (as it did recently to dozens of toddlers) the fury and anger i would feel. measles doesn't have high mortality, but even if your child gets over it they are now at risk to get Subacute sclerosing panencephalitis, a chronic, progressive, brain inflammation caused by the measles virus, a decade or more after the infection. no cure, mostly fatal. and you wouldn't even know if this could happen to your child later or not