Nuclear has killed people and caused havoc in (to be fair, a small number) of people's neighborhoods, it's not unreasonable for those people to be traumatized by it and campaign against it, even if at scale they are wrong. Vaccines simply haven't done anything like that, it's a fantasy. I think it does a real disservice to those people with genuine concerns to cluster them in with conspiracy theorists and it's bad for society to do that.