Tldr: instead of disposing of toxic industrial waste products, Dow Chemical thought “our toxic waste kills plants, if we convince farmers and suburbanites they need to kill plants, they’ll dump our toxic waste on their land and pay us for it!” The rest is the history of ecocide.
Oh, absolutely. I don’t know where fluoride is sourced from, but it wouldn’t surprise me to learn it’s an industrial byproduct that would otherwise have to be disposed of as toxic waste.
And anybody who wants to reflexively defend fluoridation because of the political bias of its American opponents should note water fluoridation is literally illegal in developed countries:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6309358