Doesn’t show much confidence in the vaccine.
Unfortunately we’re regularly told, and we know to be true, that a three times vaccinated person can catch the virus, and if they do, they can transmit the virus to others. The % who catch the virus when fully vaccinated is the point, and unfortunately with Omicron, that % seems to be high, judging by the apparent numbers of vaccinated people who have become infected. I don’t know any numbers, maybe someone else does, but the perception of vaccinated people getting infected seems to be high from general observation. So I guess that’s why many people don’t feel fully confident with their vaccines.