Spot on. How many wear them today to think that they are protecting themselves not others though. My understanding is that they actually offer almost no protection to the wearer but some (perhaps only a little but lots of littles make towards even more than a little) protection to others than the wearer.The thing with the masks was that they were to protect others, so not covering ones nose, or taking it off to cough and sneeze, was pretty stupid.
The 2.5m rule and the timing rules were also totally misunderstood by many too.

