Of course,I agree that absence of evidence is not evidence of absence. But, as the BMJ post I quoted earlier says, instead of just saying "wear a mask", the best idea would also promote trials to verify their effectiveness (like the Danish trial). It's done all the time for drugs, why not masks?
[1] https://www.cebm.net/covid-19/masking-lack-of-evidence-with-...
[2] https://pubpeer.com/publications/6AF113CE946CABB0FBB811697E5...
"missing the compounding effect" - What about the compounding effect of numerous people putting a plague vector directly on their respiratory system?
"Mistaking Absence of Evidence for Evidence of Absence" - The argument isn't that because there's no evidence it's guaranteed to not work. The argument is that without solid evidence constitutional rights should not be infringed.
And on and on.