"31. Fluoridation is unethical because individuals are forced to drink fluoridated water. If fluoride is indeed beneficial, people can always take it as a diet

"31. Fluoridation is unethical because individuals are forced to drink fluoridated water. If fluoride is indeed beneficial, people can always take it as a dietary supplement." Dietary supplement? The alleged benefit of flouride is to prevent tooth decay, how does taking it as a dietary supplement prevent tooth decay?