I do not understand the arguing against vaccines. Yes, certain people have negative reactions against certain vaccines but in the end it is going to be something like 6 people have issues, 6 million benefit. Vaccines have done wonders against dieses like Polio. To argue against them defies logic. M-RNA is one of the potentially best attack vectors against cancer.
I do believe that people should have a choice, but (this is something that many people want to avoid) with freedom also comes responsibility. If parents choose not to vaccinate a child, then that choice should be respected, however if the child then dies or gets complications from said disease then the parents can go to hell. Not to mention have a chat with a judge.