it's amazing that people spreading fake news and disinformation receive merits from a merit source... this forum section looks like a madhouse. Nowadays every kind of shit is equated with scientific knowledge and we will see the results in the short term.
let's draw then and I hope people can get it:
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Based from your images, it shows that it is always better to use face mask, to lessen the percentage of contagion. Though it might not totally eliminate the possibility of spreading, at least lower the numbers here. So what it is saying is wear your face mask, your doing good for yourself and to others. Will not hurt you in anyway by wearing it.