Masks, ventilation, and lots of disinfectant is pretty standard stuff in our modern understanding of not spreading shit,
"Modern understanding" implies quantitative statements.
What kinds of masks. Where. On whom. To what kind of fit.
How much ventilation. Where. From what source and to what outlet.
What kind of disinfect. At what concentration. At what frequency of application.
Reducing complex questions to simple binary statements is the opposite of cognition.
You are quite right I would have not been happy at all had the daycares been shut down. For the four months they were shut down in Massachusetts I was quite unhappy because I was unable to work a normal day and say with a straight face I was earning the paycheck that kept a roof over our heads. I was fortunate in having an accomodating employer. Other people less so. Had the situation gone on, either I or my wife would have had to quit work. Since at the time the wife was a resident making resident salary rather than a full doctor making doctor salary, it would have been her. In fact many women with small children did have to quit working.
So the question is...was it worth it? And were the masks worth it when the daycares reopened? To answer such a question, a control study of a suitable size that sampled a suitable diversity of geographies and masking policies would be necessary.
I am not aware of any such studies particular to daycares beyond the observational studies concluding that covid wasn't a problem for kids. If you have anything to add, please do. If you have nothing but generalizations to reiterate, please read the thread again.