There’s a world of difference between arguments about how effective a particular type of mask is at preventing disease transmission versus making the argument that wearing a mask disrupts your immune system.
Sorry, didn’t realize this was from a thread from two months ago. The study is talking about a particular type of mask (cloth masks) capturing smoke particulates. Cloth masks are known to be the bottom of the barrel in terms of effectiveness at anything. But the point is still to reduce the range and volume of respiratory droplets exhaled from an infected person’s nose and mouth. Cloth masks are less effective than surgical masks, KN-95 masks, N-95 masks, etc. but they’re more effective than nothing at all.
A mask that filters even just a quarter of the bad stuff is still better than nothing at all, even if there exist better masks that filter 95%.