I think the logic in the argument lil upside down. Fact 1) Children can't drive themselves around so currently parents tell them to stay home and they are home. Fact 2) Children infection rate is lower than adults.
(seems at least partly causal to me).
Suggestion by RG: Let the children come out b/c they 'not getting covid" at high rates
Parallel suggestion: line up the kids on a wall and only shoot one in 100 of them.
I think RG's opinion will change if (God forbid) he personally knew somebody who died (or even was hospitalized for) covid.
By summer i think most kids would be vaccinated and life should 'return to normal'.