I doubt it would have helped if we had been told the shots would reduce the risks of getting and spreading Covid. And moderate the symptoms.
We were told wearing cloth masks and social distancing would reduce the risk of catching or spreading Covid via contact with respiratory droplets. This was assuming Covid likely spread that way. Note that water droplets are expelled when people talk, yell, or sing, not just when we cough or sneeze.
It was always clear the virus is small enough to pass through cloth. So cloth masks and social distancing would not work against concentrates of air borne viruses. Again assuming the virus would spread by becoming aerosolized and concentrated given favorable conditions.
The latter is why poorly ventilated places where people congregate like restaurants, taverns, and churches were often closed; while roomy or in and out places like Walmart or liquor stores remained open with masks required.
It was also clear that cloth, surgical, and n95 masks had different levels of effectiveness.
Even though it was clear that the cheaper, more accessible cloth masks only reduced the risk of transmission via spray, antimaskers belittled their use because the virus could just pass right through. Some, in the same breath, claimed they trapped in bacteria and CO2; while blocking O2.