When covid first came out, a CDC study showed that N-95 masks are between four and ten percent (4 - 10 %)effective in preventing illness transmission.
It is all about control during the media and press engineered hysteria.
Even if “The Biden Administration” doesn’t reinstate lockdowns and mandates at the federal level, blue state governors will.
Even studies like that don’t account for all the ways that mask wearing causes health issues.