NO. I'll make up numbers. Out of 1000 people, 400 catch it, 150 have symptoms, 50 hospitalized, 10 die. With 50% vaxxed, 200 catch it, 30 have symptoms, 10 hospitalized, 1 dies. You can find these explanations all over the internet, but choose good ones, and read a few. It doesn't work the way you think it does. Anybody got one of those illustrations for him?
https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(21)00947-8/fulltext Interpretation Two doses of BNT162b2 are highly effective across all age groups (≥16 years, including older adults aged ≥85 years) in preventing symptomatic and asymptomatic SARS-CoV-2 infections and COVID-19-related hospitalisations, severe disease, and death, including those caused by the B.1.1.7 SARS-CoV-2 variant. There were marked and sustained declines in SARS-CoV-2 incidence corresponding to increasing vaccine coverage. These findings suggest that COVID-19 vaccination can help to control the pandemic.