The scientific community would not consider one study to be definitive; no matter how thorough or conclusive that study is, more is the standard.
But just for argument's sake, even if masks only provide a false sense of security, consider the general public's track record with most any uncertainty faced just within the past two decades and then take into account the other news stories...
https://abc7chicago.com/easter-egg-h...ticut/1265195/
https://www.cbc.ca/archives/when-the...ling-1.4921367
Cut to 2020's hand sanitizer and toilet paper shortages.
An adult pacifier that encourages people to talk less and avoid interacting with each other isn't exactly a bad thing. And, to my knowledge, the only harm has been from littering.