What do you mean "so what"?

Read the paper. There were more cases per student when masks were required.

Look at the paper and their plot when they talk about cases overall.

We do not understand what masks do and what people do when masked with these silly measures. Putting on and off a mask cannot be good for you.

The mask proponents "think" simplistically and that it "ought" to work. "Logically it MUST work.

There is no such thing "I know it works", so no need to do it. Anything we "know" is because we ran solid tests and collected clear cut evidences many many times. None of which are true for masks.