The other part of it is that there is a strong implication that they'd be perfectly fine (or even would advocate) with forced vaccinations - and even if these things were divinely sent, I would have to oppose that on principle.
Full disclosure: I’m not fine with forced vaccinations, but I am fine with institutions, such as schools and universities, requiring vaccinations for admission, so that there won’t be diseases spreading like wildfire in these institutions. Like other people here have said, this is a public health issue.
And no, I’m not hysterically advocating for everybody to get mundane, routine things like the flu shot, either. I would urge them to do measles, pertussis, etc., however.