Yes I didn't word that the greatest. But I did separate the two for that reason. Like it's a fact that a bunch of moms came to him and told their stories of how their kids changed right after getting a vaccine. But it's also anecdotal evidence. He has lots of that type of info and lots of straight up data facts type of info that can be looked up and can't be disputed. That's what I meant.
One thing I teach to my students all the time is: evidence does NOT equal truth.
If you want something to be true (anything), you can find some evidence to support it. But evidence exists at many different levels of quality. Some is very low quality (anecdote, expert opinion).
Just above that is basic science stuff (animal models, cell models, etc.)...that makes up most of biomedical research, and it is absolutely critical to being able to develop future interventions to translate to humans. But, the vast majority of what looks promising at a basic science level craps out when it is applied to humans. Like, way more than 90% of what we think we know from basic science doesn't actually translate in the way we expect to the human.
A step higher, we have epidemiology (observational research). We are observing what free-living humans are doing (we are not controlling anything), and we are comparing this to the outcomes we are observing. This is how we know exercise helps us live longer, obesity shortens our lifespan, etc.
Highest level of experimental evidence is the randomized controlled trial (RCT). You predict what happens with an intervention, you apply the intervention, you see if your prediction holds true. Not all questions can be approached with an RCT, of course.
But what really matters it the BODY OF EVIDENCE. That is why the systematic review is considered the strongest evidence...it is a collection of all evidence that exists on a topic, systematically gathered, and synthesized to come to the most likely conclusion.
RFK, Jr. might be able to cherry-pick a piece of evidence here and there, but his argument is strongly refuted by the body of evidence regarding vaccine efficacy and safety. We should be open to the idea that for certain populations, vaccine risks (which absolutely do exist) might potentially outweigh benefits; and that is probably a question and a topic that should be studied more. But I have heard enough outrageous statements come out of his mouth that fly in the face of existing evidence to consider him a charlatan, and to not really want to waste any more of my life trying to take his schtick seriously.
I am also not interested in, "But look at this one video where he says something that is reasonable!" He talks out of both sides of his mouth, sounding reasonable when in a setting where it is expected, and going full-blown crazy in other settings. He is a serial liar, and no one should take him seriously unless they are hungry for the snake oil he is selling.