A large portion of people wear cloth masks, which are largely ineffective. In addition, you’re talking about a group of 20+ people being in close proximity for at least an hour. (Most) masks are only going to reduce the number of viruses spread, so it might buy you a little extra time around someone that’s infected - but at some point enough will get through.
In the US, at least. In countries like Italy, they mostly wear surgical masks and have started a broader push for FFP2 masks. I find this kind of bizarre - the US has a lot more money than a place like Italy, but I guess they cared more about trying to layer some preventative measures instead of turning crappy cloth masks into some sort of weird self-expression thing.
