“Does it matter at all that marks are ineffective in preventing virus infection? Probably not.”
A cloth mask filters 65-85% of airborne particles that carry the virus. While it will not 100% prevent infection, it reduces the viral load and your chances of contracting the disease. And if you’ve got it, it reduces the chances you’ll spread it.
Choose to wear one, or not.
What happens to the viruses in the 65-85% of particles that are trapped in the mask? Especially the liquid aerosol particles. Let's say a very small droplet containing many viruses is trapped in the mask fibers. As this droplet evaporates where do the viruses go? Do they drop to the ground? Are some expelled by the breath? Are some inhaled by the inward force of breathing?
Is it possible that a mask collects and concentrates virus by collecting airborne particles which would otherwise be dispersed? Might such a concentration of virus than be inhaled through the mask?
From all that I have read (in scientific journals) masks do little to nothing to prevent viral infection. If worn too long before replacement, they might actually enhance chances of infection.
Wearing a mask is a placebo. It if makes anyone feel better, then wear one. I remain dubious.