> Blocking the faces of children in the prime of their 
  > life, where they need to develop social skills through 
  > interaction and facial expression, is madness.

[Citation needed.] I am unable to find a single reliable source that says mask wearing has any sociological or psychological effect on children or anyone else. Anecdotally, I haven't seen anything like that. Just typical kids.

  > The covid risk for children is a rounding error.

Again, who says that's true? Can't find it. The Ohio Department of Health maintains a dashboard[1] for this, which indicates that it's significant enough to track, and the numbers there sure aren't "rounding error" numbers.

Assuming what you meant is "children are less likely to develop severe symptoms," and also that that's true: they can still spread the virus to the adults they live with in their homes, or the many adults that share the school building they're in. (Did you think we just shove kids in an adult-less environment, or that teachers are somehow immune?)

[1]: https://coronavirus.ohio.gov/wps/portal/gov/covid-19/dashboa...