The main issue with schools is that the kids catch it, don't suffer with it much but pass it to their parents and potentially grand parents. Schools are just a great nexuses for rapidly spreading covid through communities.
It is true that kids are always spreading respiratory ailments. We've always had to live with this risk.
It seems to matter how dangerous the situation is, how helpful closing the schools actually is, and how much harm we are doing to kids in order to hopefully protect others. It doesn't help that we don't have exact numbers for some of this. Nor would people assess these risks the same, even if they agree on the numbers.
For example, some people don't think that covid is that dangerous, given that only 1 in 500 people have died and we now have a vaccine. Some people think the harm to kids is significant, especially those just starting school and how long they have been locked down. Some people question how effective closing schools has actually been, how many lives are actually being saved, or are we only delaying the inevitable spread of this through the entire population. Some people feel the opposite, they are vulnerable and want to impose on others to lesson risk to themselves.
Keeping schools closed now that we have vaccines doesn't make as much sense as before. If the vaccines are 95% effective at preventing death and hospitalization then there is 95% less reason for keeping schools closed.
I broadly agree, with vaccines I don't really think there's a good reason to keep schools closed. Before I think it made sense to err on the side of caution.
