My point in bringing up other diseases is that a vaccine for them is entirely a personal decision (or one your parents made) and we as a society accept that, "OK, if you don't want to protect yourself that's fine, but you'll pay the consequences if you get sick. We'll be laughing our vaccinated a**es off at you, but it's your personal choice to get it or not."
Functionally, the COVID vaccine is identical to any other; it protects the person injected and doesn't necessarily stop said person from transmitting the virus. Why then is it being treated differently?
I recognize what you're saying, but a useless strategy, even a halfhearted one, is still a waste of public resources that were expended to do nothing but assuage irrational fear. [Irrational, in this case, meaning it is nonsensical to worry about getting COVID if you have the shot.]