Vaccines have been around for decades however. Time and again they proved they helped to defeat diseases. I grew up as a little kid caressing with curiosity the little scar that my mother had on her arm because of a vaccination against.... well, something I don't remember at the moment, but her and everyone else of her generation have that vaccination scar.
When did we suddenly decide that vaccines are harmful? probably since a random moron came out with a stupid study on how "vaccines cause autism" (spoiler, they don't) and it ignited a mass hysteria about vaccines. Once there was the saying of (not) "shouting fire in a crowded theater", now we should warn about not spewing inane bullshit on the web, there is always someone idiot enough to believe it (I'm looking at you, Qanon).
Now, of course we should differentiate between the two kind of no vaxxers...
1) The extremist ones, the "vaccines cause autism" ones, the "Bill Gates inject us microchips for population control" ones; these are people with serious psychological issues and they should receive professional help, and until they get it, they should not be allowed to vote or to have children;
2) The "rational" ones, people who understand the importance of vaccines but have doubts about the rush for this particular one - I would be curious to know how much they knew vaccines beforehand, and how many hours (or minutes?) they spend educating themselves about it to TRULY understand the issue. You can't get educated about vaccines, if it was not your field, just by reading a random internet article. There's a lot more of work that has to go into it.