Most of them may not die but a lot of them could have health issues as this thing is proven nasty. However severe that is, it depends on the batch, the type of injection (the mRNA one is the worst compared with the adenovirus variety) and their own body's defenses. Any Satanist who took this can reverse its effects easily.
Take some things with a grain of salt when the internet or when members here get hysterical.
Any vaccine development team is going to have many different people, but Pfizer's CEO is one.