The most at risk are now wearing masks where I live without mandate....I am sure all of them got vaccinated. The % of younger people is lower I am sure, especially among the recently approved age levels. As the virulence wanes, hopefully the mandate talk subsides, and some companies have rolled it back.
If you are vaccinated, you are less likely to spread it because if you do catch it, it is at a lower level of presence in your body and therefore less contagious, that is why it is better for the community if everyone gets vaccinated. Those who are ill-informed, selfish, stubborn, or think it is somehow a political issue and not a health one are the only ones not getting vaccinated (except maybe for kids whose parent won't let them get it).
They should never have used the word mandate. It has a bad connotation. Recommendation with potential consequences if not adhered to is better. Places where I live state it best - "Please wear a mask when you enter the store". You can come in without one, which I do if it is not a real crowded place, but forcing me to put one on where there is not another human in sight is ridiculous.