It specifically helps kids who haven’t gotten in the habit of brushing properly yet. We have non-fluoride parts of the country that show higher cases of child dental work needed. We also eat a lot of high fructose corn syrup.
Overall for the whole population it is a net gain.
We don’t really have to worry about what Trump offered, he got less votes than last time on the same tired platform. The problem was Democrats through and through not being left at all. Losing millions of votes that way. Some people can play the lesser of two evils game, but as we just saw there are not enough people who can vote while holding their noses.
I held my nose, but the numbers clearly show it was a Democrat failure to communicate, empathize, and/or initiate with voters.