Latest studies don't seem to agree with your statement: "Increases in COVID-19 are unrelated to levels of vaccination across 68 countries and 2947 counties in the United States" https://link.springer.com/article/10.1007/s10654-021-00808-7

The theory of vaccinating people to protect others is taking another hit. It looks more that we should focus on proposing the vaccine to the people at risk (clearly identified, >65 years old, or multiple co-morbidity) for their own survival