Enriched flour, iodized salt, vitamin- & mineral-fortified children's breakfast cereals, pasteurized milk, etc., etc. seem to get vastly less angry push-back.

Even though (from a quick Google) there are loads of fluoride-removing water filters that anyone could purchase.

Vs. good luck if you want to de-enrich flour, or any product made from it.

Theory: Too many of the Well-Intended Scientists who were given the Fluoridate Public Water Supplies quest cards had used Charisma as their dump stat.