Earlier quoted context omitted.
I agree in general. But what if I did want to know if vaccines are dangerous, so I search "are vaccines dangerous". If I want to find an anti-vaccine site, I should be able to do so, but the search term "are vaccines dangerous" should be viewed neutrally, in which case I would find links from cdc or .gov sites to be more useful that anti-vaccines sites
We go to school in the US for usually at least 12 years. Any person should already be educated on topics such as anti vaccination. In particular in my state you can’t even go to school if you haven’t had your vaccines. Not only that but we learn how to learn in school. The argument for censorship against stupidity assumes exactly that, that the majority of people are stupid which they are not.
The quality of US public schools can vary immensely, especially for students in poor areas where the community can't put up much money and education budgets are the first thing to be slashed.
Additionally, many states allow outright lies such as creationism or abstinence-only sex ed to be taught - both of this is further evidence that it cannot be assumed automatically that a person educated in the US is well educated.