Have you read the actual study, or just someone else's opinion of it? I have.Do you agree with these facts then? You know cause you gave me the definition of fact. Pure genius.
https://www.medpagetoday.com/blogs/vinay-prasad/89778
" Observational evidence suggests that mask wearing mitigates transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). It is uncertain if this observed association arises through protection of uninfected wearers (protective effect), via reduced transmission from infected mask wearers (source control), or both."
https://www.acpjournals.org/doi/10.7326/M20-6817