That is 100% true, no vaccines are 100% effective in real life, and I am truly sorry to hear about your family.
But the point is the same. How many deaths are acceptable in a society? Is it reasonable to expect nobody to die of covid? Should the US and the UK stop opening up because there are still people dying of covid, even with high levels of vaccination? When do we resume our lives? At zero covid?
Even in Israel there are still covid patients in the hospitals and deaths everyday.
It is a sad truth of life that people die. Not only of covid, but in car accidents, the flu seas