If you don't know how it's transmitted, then try various things and see if they help. We tried lockdown, and it worked. So we kept doing it, if it didn't change the situation we would have tried other things instead.
It is not that lockdown is bad or wrong. It is that I do not agree with all the things which were hit. I acknowledge there is a price to keeping education open but I believe it would have been worthwhile.
Perhaps you missed my point? Governing is about more than keeping the most people alive.
Actually I believe that’s table stakes for good governance. Trading known deaths for possible impact to development of children isn’t even in the realm of equal, which is why most places didn’t do it.
What about the children who infected their parents and now they're orphans?
No, we tried lockdowns, they did not work well, then extended them, then again. In my country some school children did not go to school for a whole year because people with anxiety disorder thought opening schools would kill children, parents and grand parents.