I think cloth masks are at the crossroads of wishful thinking and public health theater.
They absolutely have legitimate medical uses, and can prevent droplet borne disease transmission and thus there is a plausible mechanism by which they reduce spread. But I don’t think there’s any serious evidence that they are anything more than marginal with respect to the spread of COVID.
That's not true. There have been plenty of studies showing cloth masks help significantly over nothing, and especially if it's a double layer mask. The cotton ones that are breathable are worse.
They absolutely have legitimate medical uses, and can prevent droplet borne disease transmission and thus there is a plausible mechanism by which they reduce spread. But I don’t think there’s any serious evidence that they are anything more than marginal with respect to the spread of COVID.