>Simple conclusion: "Masks make a huge difference indoors and rarely matter outdoors."

Also: For a disease that we now know is airborne/aerosol spread rather than airborne/droplet, N95 and KN95 masks are highly effective, a two layer cloth mask fit tightly over a surgical mask is moderately effective, and a cloth mask by itself is largely for show. I still see people saying you should NOT use N95 masks (they're cheaply and widely available now) while donning a neck gaiter pulled up over their mouth. It's another area where the initial messaging was terrible (in this case out of the good intention of reserving them for healthcare workers) and unfortunately has persisted.