If we're going to be super sensitive about the almost non-existent threat of children wrt sars-cov-2According to the studies I linked above, closing schools during outbreaks saved many, many thousands of (mostly adult) lives. If those studies are correct, the threat is absolutely not "almost non-existent." If you have particular issues with those studies, please share them.
I think it's good to remember that the following can both be simultaneously true:
1. There can be significant mental (and maybe physical!) health risks to keeping your kids home from school.
2. There can be significant physical (and maybe mental!) health risks to sending your kids to school.[0]
Neither point makes the other any less valid.
Every family is different, so everyone's going to weigh those two risks differently, and we need to be generous, patient, and understanding in figuring out how to accommodate each other.
[0] I'm seeing more studies saying mental illness rates are ticking up in Covid survivors relative to other cohorts, so there seems to be a mental health risk that rides the coattails of risk of infection.