The problem — at least a major one — with Zero Covid is that it likely sacrifices many more life-years of kids and younger people for much fewer of the same for older people. I know standard-issue liberals are just not equipped to think about things that way, but it is unfortunately true.
Is that sacrifice worth it? Is that a good trade-off? That’s not a question that can be answered with science, but rather with ethics and morality. I think the answer is “no” and have trouble understanding why others think the answer is “yes” even when they accept the premises — which many do, and still want to enact this vast harm.
Zero Covid will almost never be “done right,” which means the harms are just built in, ineluctably.