Swale does bring forth a third dynamic which is worth considering:

The "cannot" due to medical reasons we appear agreed upon

he then splits the "will nots" into tow camps - the unwilling (which I have termed "wont's") and a new category of unable. I'm intrigued to know who falls into the camp of unable, and why anyone should be unable to have a vaccine other than on medical grounds. ive pondered this and come up with no classification of person who might be willing but unable to take the jab. be intrigued to know who such might be.