There is a huge conflation of issues, which makes it hard to solve the problem:
1- People that are concerned are not necessarily afraid of dying. There are clearly a number of other long term consequences that everyone should be wanting to avoid. If a large proportion of the population will have heart and lung problems in the future, we are all going to have to pay for it.
2 - If someone is worried, they are not saying that they want lockdown to stay forever.
3 - Education and child care are different beasts and perhaps could be separated somehow?
4- The relative importance of point 3 changes between primary and secondary. So the best solution is likely different for both. Bubbles are much easier to handle in primaries, and the need for childcare is much greater with younger ones. People get mad with each other because one poster is thinking about secondary, while other have primary kids in mind...
5 - There are clearly many children that are not thriving in lockdown, but there are some that are. One of the biggest isuues is how to fit and transport secondary kids, so why should we say that everyone needs to go back or be fined? A child that does well learning on their own with teacher guidance, is very different from a child cut off from school.
6- As people said in the beggining...if the disruptions are inevitable, isn't better to keep the core education of secondary schools online and view in school activities as opportunities for practicals, arts, mental health, sports, etc? This way we can do the best of both worlds?
Statements that schools will reopen no matter what is, i'm sorry, just populist statements with little concern for evidence.