The doctor cited the largest study available on the subject.
As cited, Cloth masks are useless. Surgical masks reduced spread among those over 50. By 11%. Under 50 they were found to present no benefit.
Bangladesh, home of the study in question, then installed no enforced mask mandate. Why enforce it when it presents little to no benefit? Why force it on the whole public when certainly the whole public didn't need it?
We have been haunting the populace over it for no viable reason, and have been instructed to tell ourselves and others lies about it or face penalties.
In the name of 'science'. Which is as we fully know is a fn crock.
It's not good.