Do you have any evidence for such claims or is it just another conspiracy theory? As for what mask do, if it was that easy, there wouldn't be the need of so ma

Do you have any evidence for such claims or is it just another conspiracy theory? As for what mask do, if it was that easy, there wouldn't be the need of so many studies. But that is not even the claim here. The article says mask mandates make no difference. Even if we assume that masks work, people wear them wrongly, they reuse them instead of using clean ones, fidget with them and then touch other parts of their face. There are plenty of reasons why a mandate could not work.