> * there is no evidence linking acetaminophen to autism

This is not entirely true. Several large observational studies show a statistically significant (but small absolute) difference in rates of neurodevelopmental disorders including autism among children with and without maternal acetaminophen exposure. See this meta-analysis [0].

Now, the actions taken by this administration and what they are claiming about the evidence are a different matter altogether. Cause and effect are far from determined in the acetaminophen/autism relationship. But informational accuracy is not known to be the interest of Trump and RFK Jr.

[0] https://ehjournal.biomedcentral.com/articles/10.1186/s12940-...