I wish the conversation would move on from "do masks work?" to "do they work well enough to be worth the cost?"
Because I think the costs are being significantly underestimated. We are social creatures. All of the joy has been taken out of routine daily activities. Putting on a mask at the supermarket entrance as if you're about to enter some contaminated danger zone. Being unable to give a friendly smile to people as you pass them. I am 100% sure it's affecting my mental health, and I can't be the only one. In online discussion, these concerns get brushed aside as if they are the complaints of a spoiled child: "stop being a Karen and put a damn mask on..."
I'm not some science denier. It seems logical that a barrier over the mouth and nose must limit how far droplets can travel. As I understand it, empirical evidence also supports this (when the mask is worn by an infected person). There may be some (weak) evidence that masks also protect a non-infected wearer, despite this study.
But the size of the effect can't be that big. Here in the UK mask compliance is high, yet we're well into our second wave. So in the real world, masks can't be doing all that much. (Or, most of the infections are happening in mask-free places such as between family members in the home).
So maybe I'm just another "Karen", but I want more evidence that I'm enduring the costs of mask-wearing for a good reason.
In the meantime, I'll keep wearing my mask because it seems to keep everyone else happy, but I'm continually disappointed by the lack of nuanced discussion about this.