There was no claim that the vax would prevent infection. There was claims that it would prevent serious outcomes. Death rates in countries with the highest vaccination rates were lower. Life style also determined ones immune system. If you had diabetes, obesity, alcoholism, and smoked, your immune system would have less chance with the vaccine protecting you from serious outcomes. It’s like entering the freeway with a car with a dirty fuel injector and a couple cylinders with low compression due to abuse.
LOL
Were you even alive in 2021? That was the big push. Get the Vax and you won’t get Covid. They lied. And you are misinformed.