I saw one study of relative death rates that concluded if all US has followed California standards, about 800,000 fewer people would have died. And remember "flatten the curve"? The goal isn't to stop everyone getting the virus but to slow it down enough that the health care capacity is sufficient. A quick google finds this study and a few more recommended: https://www.nature.com/articles/s41598-023-31709-2 even the way the virus isn't killing as many vulnerable people as we get it the Nth time after M vaccinations is a success if the lower the curve strategy.