Why do you believe it rather than know it from solid science?
The problem is that the whole mask thing has dubious impact, much like Vitamin D, or washing hands and the rest, but has become a symbol of political allegiance, not medical impact. What was predicted to happen in Texas hasn't happened.
There has been absolutely no evidence anywhere of children in schools being vectors for transmission. They suffer very little sickness from the disease and don't seem to spread the virus until they start showing actual symptoms - both of which directly contradict the prevailing narrative.
Yet these glaring anomalies seem to be dismissed by the prevailing belief. Even simply mentioning them has become verboten as the response to this post will probably show.
I don't believe anybody has looked into whether different types of people from different ages 'leak' the virus differently. That would go some way to explain the difference between the Diamond Princess experience (full of older people), and schools (full of younger people).
We know very little and humility in the face of that is called for. What we're doing now is going to look foolish in the future once we know more.