There are several problems with the charlatans.

1. if you haven't taken a science class since high school, then their advice often right. I'm amazed at how quickly the medical pseudo-science that flipped politically in my life time. I was raised in a deep red conservative Christian community and I don't remember anti-vaccines ever being a thing for my community (we definitely had our issues, just not that one). The medical pseudo-science thing back then was firmly in the far left liberal sphere. The anti-vaxx movement was a hippy-liberal thing. (I'm not really sure when that flipped.)

2. The medical industry -including academia- is very much at fault in burning trust. There are many instances of the medical industry intentionally withholding treatments because a different treatment made them more money. Or doctors over prescribing in order to charge insurance companies more money.

3. A lot of what RFK jr says. Starts off good. He's all like "Hey, we medicate too much. We should all focus on eating healthier and exercising. That's what the government should encourage." And even I'm like, "Yeah, okay. I agree." Then he goes on to say "And that why you should shove a bowling ball up your butt." That's when he loses me.