There are lots of verifiable, veridical, problems with the MRNA vaccines made for COVID-19. However, at least in Canada, it was widely disseminated that these were NOT going to prevent infection. They would help the body to respond more quickly by being sensitized to the spike proteins on the outer surface of the virus. This meant that people would not get a lot sicker before their own natural immunity wised up and realized the body was in a crisis.
Unlike other vaccines, like the Salk vaccine for polio that prevented the infection in the first place, the COVID vaccines were only ever meant to give a new host body a head start on its immune response. We're talking about a full 24 hours quicker, meaning the virus was prevented sooner from replicating in huge numbers which was what killed many people....if it wasn't follow-on infection such as pneumonia or other opportunistic diseases.