Which person lied? I did not hear the claim (from a public health authority) that masks were not effective in preventing transmission. I did hear the claim that we are unsure if masks provide protection for the user (rather than just protecting others from the user), which still reflects our current knowledge for most mask types AFAIK. I did hear the recommendation against buying masks early on to protect the supplies for more critical users.
I also don't see how you can blame the health authorities for this when half the political leadership in this country continually questioned (and in some cases still questions) the efficacy of masks and successfully politicized the issue.
>“What the World Health Organization [WHO] and the CDC [The Centers for Disease Control and Prevention] have reaffirmed in the last few days is that they do not recommend the general public wear masks.”
But in neither of those cases did anyone say, you shouldn't wear a mask because they won't work. They recommended against wearing masks because they thought the harms of people wearing masks would outweigh the benefits at that point. I tried to make the distinction between saying "we not do not recommend the public wear masks" and "masks do not help prevent sick people from spreading the virus" clear in my original comment. All comments I saw were the former statement, which I think is not misleading the public or lying, not the latter.
It's possible they were wrong w.r.t. the harms outweighing the benefits but that's easier to say in hindsight.
"They are NOT effective in preventing general public from catching #Coronavirus" reads to me exactly as "you shouldn't wear a mask because they won't work".
Exactly, and at that time my wife and I were wearing masks (that we already had from before the pandemic!) going in stores and people gave us looks, made comments, etc. That is what happens when our leaders are irresponsible, ineffective and plain stupid.
I also don't see how you can blame the health authorities for this when half the political leadership in this country continually questioned (and in some cases still questions) the efficacy of masks and successfully politicized the issue.
Scott Alexander covers your point under this blog post https://slatestarcodex.com/2020/03/23/face-masks-much-more-t.... I believe at one point he felt similarly to you.