This probably explains the previously mysterious drop in Delta cases in the UK. In the U.S. why shouldn't we just shoot for herd immunity now? Not sure how effective restrictions and mandates will be in slowing things down and the costs to mental health and quality of life are so high.
The US doesn't have a choice to shoot for herd immunity because the remaining willfully unvaccinated population is both anti-mask and anti-vax. EDIT: Guess I worded that badly. What I mean is: choosing herd immunity is inevitable, so there is no choice. It will happen. EDIT2: It didn't occur to me that there is a huge risk if more deadly mutations happen faster than herd immunity.
That's not quite true. I know people who are not anti-vax, nor anti-mask, but they have an aversion to a new untested vaccine.