The core problem with all this anti-vax bullshit, is that Vaccines worked..and they worked too well.

We have entire generations now that have never seen the terrible consequences of Polio, Smallpox, Measels (Although thats quickly changing, Go America! /s), or any other disease thats been eliminated (at least at one point.. Go America! /s) from popular concern and conscious.

and as a result, they have no idea what crippling horrors that they have been, and are actively, protected from.

and because humans are, generally, stupid and irrational and a lot of them lack the capability to think about anything beyond what they can see within 3 feet around them, they scream about the vaccines and call them evil because they have absolute no experience with the alternative, which is the diseases themselves.