Wearing masks and herd immunity are complementary. They achieve the exact same result.
Re: “Wearing masks and herd immunity are complementary. They achieve the exact same result.”
If that were true, everyone would have been wearing a mask full time for the last century.
One reason the USA west coast has a lower COVID case fatality rate is because the corona common cold virus is more prevalent out here, so, many of us already have some level of immunity to COVID-19.