It is uncertain whether all of these promoters get paid to comment, but with the big money at risk with the fluoridation scheme, $200 million per year, it would not be surprising. 
So, there is no point continuing to debate a full time promoter. Most of us have other things to accomplish. 
Anyone promoting fluoridation has a hidden agenda. Fluoride is a known neurotoxin with serious health consequences. Any possible benefits are topical not by ingestion. 
Swallowing it only harms health.