The masks don't contain breath, it all just vents out of the sides and some even perforates through the mask itself. If this weren't the case, people simply wouldn't be able to breath. I don't see how venting through the sides of your face instead of at a downward angle like the nostrils are at is effective in anyway. If anything it seems like it might be worse.

And it's not like the mask "catches" the moisture or anything like that. Like sure, a negligible amount is left on the mask (that builds over time and causes pneumonia) but all the air flow rushing past the mask is still carrying most of it. This is acutely obvious to anyone who wears glasses since they tend to fog every breath unless you use adhesives or beat the metal thingie into place particularly enough.

Add into it that people are touching it constantly and then touching other things and just plain out wearing it incorrectly or temporarily removing it constantly, over-wearing masks, etc.. I just don't see how it doesn't end up being even worse.