That is correct. And we knew it before. Heck the surgical mask boxes used to say not for viruses lol
Medical grade masks are designed to stop germs or bacteria, much larger organisms than dead, inert submicroscopic viruses.
And they should be worn only for short periods of time before being disposed of in bio-hazard containers.
There is so much misinformation floating around the country from these so-called government medical experts who flip-flop back and forth on masks, that no one knows what is true or not true.