A huge Danish study, with control group, showed masks do nothing to stop COVID.
Fauci is both an idiot and a liar.
That study is very old and in fact does infer that masks work somewhat (+\- 3%). The most recent study on masking showed that a good quality mask worn properly did provide varying levels of protection ranging from 15 minutes (close proximity to an unmasked infected person) to up to over an hour (both parties masked). One of the big problems with both masks and vaccines is that it encourages people to go into risky situations without taking additional precautions. This is not a huge deal for most people but for those who have medical issues or co-morbidities that can be exacerbated by COVID, they should really exercise additional caution or risk mitigation that is reasonable for their situation.