“In conclusion, both surgical and cotton masks seem to be ineffective in preventing the dissemination of SARS–CoV-2 from the coughs of patients with COVID-19 to the environment and external mask surface.”
While interesting, that study alone doesnt tell us much. It's like saying football helmets do not prevent head injuries so why bother wearing them at all.
Note just that. There's studies proving now that the non-N95 masks people are wearing isn't effective:
https://annals.org/aim/fullarticle/2764367/effectiveness-surgical-cotton-masks-blocking-sars-cov-2-controlled-comparison
While interesting, that study alone doesnt tell us much. It's like saying football helmets do not prevent head injuries so why bother wearing them at all.