lol. It’s certainly hyperbole. How many people drive drunk each day? I mean- people have literally fallen from planes at altitudes of thousands of feet and survived. There really isn’t anything we can say has a 100% mortality rate and be 100% sure of that- some things just have higher rates than others. But the better phrasing here would be: “no your kid won’t get autism from a vaccine.” “Yes, your kid should probably be vaccinated.”
Scientists share some culpability, but I don’t know that it’s their fault. It isn’t really scientists jobs to dictate what we do with science or how we receive it- and science by its nature is ever changing, there aren’t technically “certainties” in science- just things that have passed a burden to be repeatable and consistent, and haven’t been proven wrong yet- until they are. Most of the science people get is filtered trough media, politicians, and businesses anyway- so a scientist releases a 300 page study showing a possible link between oatmeal and brain herpes because bats in a study showed a .8% increase in risk to contract- and the news says oatmeal will give you cancer or a president says windmills- errr.. oatmeal will give you cancer- and people go with it because they aren’t going to read a 300 page document (that is probably not a click away on the internet- or is but is pay walled) and if they did they likely wouldn’t understand it because they lack the knowledge to.
I don't think the mortality rate of children pre-vaccines was 100%