Earlier quoted context omitted.
> The messaging IIRC was a little more nuanced, but delivered poorly No, there was no nuance here and everyone in this thread is mis-remembering or mis-understood what actually happened. Masks don't work against COVID. They never did. They don't reduce viral load or anything else either. In fact there was no evidence of masks doing much of anything in the scientific literature pre-COVID (post-COVID it's been polluted…
That blog post is complete nonsense. You can't look at graphs of when mask mandates were introduced and then lifted, because you can't isolate cause and effect. Mask mandates tend to get introduced when cases are going up, and removed when cases are going down. This would be absolutely shredded in a scientific paper, which is why it's a blog post rather than part of the literature.
How much impact can we see at the time of introduction and removal? Zero. In all those graphs the curve continues exactly on its previous trend line.
Your point would be valid if there was a visible impact and we were trying to establish how much of that came from masks. But we aren't trying to disentangle cause and effect here, because there's no effect to establish a cause for. If there's no effect then masks cannot be the cause, can they?