Ultimate responsibility does, it is true , rest with successive GBodies who have interpreted the Scriptures in the way they have and over stated medical risks - but at the end of the day it is the individual who decides what to do with himself.
Dubs are conditioned to view blood as a toxic treatment which will not only bring down the wrath of God but probably infect them with something nasty , to boot.
The one’s I know would as soon put human s##t in their bodies than accept blood .