I agree that a vaccinated person has a smaller risk of transmitting the virus than an unvaccinated person. But they CAN transmit the virus. So again, why not use the best mask available. To put it another way, if your child was being treated in a hospital would you feel more comfortable if those treating your child were wearing the N95 mask? Are you saying that you would be fine with them just wearing the regular mask?
I really don’t see how I can make this more clear.