Earlier quoted context omitted.
A less cynical framing is that the US is a much different culture from European countries, and is massively larger in scale. Depending on the problem, some of their solutions simply can't or don't apply.
Which part here exactly cannot work in the US? I am talking about brushing one's teeth with toothpaste containing fluoride, which sounds as plain simple as possible to me. Is it regular brushing teeth that fails in the US for cultural reasons? Fluoride in the toothpaste? Supervising kids while brushing their teeth to make sure they do not swallow? It is an honest question.
(For now, at least? How long until that gets cracked down on as dangerous?)