certain circumstances 'cloth masks'?...some are definitely better than others...but that does not make cloth masks TOTALLY ineffective....in point of fact, our own CDC has recommended them in the early days of COVID, when even surgical masks were hard to find...never mind N95s. See this excerpt from the attached link...
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In an editorial published today in the Journal of the American Medical Association (JAMA), CDC reviewed the latest science and affirms that cloth face coverings are a critical tool in the fight against COVID-19 that could reduce the spread of the disease, particularly when used universally within communities. There is increasing evidence that cloth face coverings help prevent people who have COVID-19 from spreading the virus to others.
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Walk away if you want, but I've just given the viewing audience the facts on this matter.
Link: https://www.cdc.gov/media/releases/2020/p0714-americans-to-wear-masks.html