Masks in such environments were historically used to keep the professional from infecting those with especially high vulnerability such as during operations.
Not when all professionals were wearing PPE for all patient interactions.
In the latter situation, such changes represent just an insane number of changes where, again, if so needed, whole, seal uniforms would be called for both wearing and changing.
In short, the use of PPE has changed significantly since such standards.
I was talking surgical masks not all PPE, former spouse is RN/BSN in ICU, OR, ER, MedSurg. So I know. N95s have to be fitted for a lot of people. Otherwise, useless.