Yay, this is great, and should be used for everything! /s If we used this for medical advice in my country, this would make it very funny... at the start of the epidemic, our government "experts" said: - "healthy people don't need masks" ...and youtube would censor all the "fearmongering paranoics" advocating for mask use. Then on some random spring day, our government makes a new rule: - "you need a mask and gloves…
Isn't this how science works, you have new information and you use it to make a better decision.
Why didn't we have the science? Respiratory infections aren't new. I remember debating people early in the outbreak about the use of masks and they were pointing out that there was little scientific evidence on the use of masks, especially non n-95.