alt Hacker NewsMasks and protocols around them were largely just theatre though. Only very expensive n95 or better type masks, which were properly fitted and handled would actually provide any sort of protection from covid. Even the eventual proponents of masks initially were against the idea as in many ways many of the responses to covid were directed politically, not practically.
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Perhaps the messaging was different where you lived, but I don't believe any credible professional was suggesting those outside healthcare wear masks for their own protection. Mask mandates are to reduce the risk of others catching covid from you, a considerably easier task for which even cloth masks are usefully effective. There's a reason surgeons masks are still used.
The proper masks are not expensive and an imperfect fit still helps a lot.
The mask mandates weren't to protect you, they were to protect others from you. If everyone did this, the spread would have been massively reduced, and super-spreader events wouldn't have happened anywhere near as much.
Unfortunately, a great many people simply refused to distance and wear a mask, and then when they became infected, spread it far and wide, sometimes not even aware that they were doing so. Approximately 40% of those infected were asymptomatic, meaning they would feel fine but still make others around them sick (or end up killing them).