from MIT researchers who couldn't have been more emphatic in their insistence that masks be used in schools, nursing homes and other indoor facilities, along with ventilation improvements...in fact those researchers noted value from ALL types of masks, from the least (cloth masks) to the best (N95 masks) while denoting how long each would provide a measure of transmission protection.
Why a physician like Baron insists on repeatedly going against sound medical judgement is a mystery, but thankfully it's not a trait found very often in that field.