I'm no RFK Jr. fan, and probably made that clear in a post or three a bit of a while ago.
I'm routinely skeptical of the two claims now out there about what causes autism (the acetaminophen claim is new to me, the other being anti-vaxxers claim that vaccines cause it). On the pop culture side the claims are predicated on the increase of autism diagnoses in the past 50 or 60 years. While the "increase" is real enough, 50 or 60 years ago autism was not a medically defined thing, nor were diagnostic behaviors identified. In simple terms:
* Formal autism diagnoses started from near-zero 50 or 60 years ago;
* Formal diagnoses increased for at least a decade or two (from the early 1970s, IIRC) as doctors learned of the condition and accepted the validity;
* Formal diagnoses increased over the entire time as parents became aware of the condition and realized, "My ______ does that";
* Also in the mix on the pop culture side is the pop-culture phenomenon of trendy diseases (e.g. hypoglycemia in the late 1970s or TMJ in the late 1980s; both real conditions, but the trendiness made things more difficult for those actually having the condition);
* Also possibly contributing to the increase would be fraudsters who found some government program they could defraud with phony diagnoses and treatments.
Putting it simply, trying link the increase of autism diagnoses to the increase in the number of childhood vaccines or the increase acetaminophen use due to making it OTC has to take into account the full historical context. So, I'm skeptical about the supposed acetaminophen-autism link, but unlike the anti-vaxxers' claim, there is research underlying what was recently announced.
hunter was probably an RFK Jr. fan until he started working with Trump.