This seems like the sane, boring reality. People with modern dental routines probably don't benefit from the original purposes of fluoridation the same way people in the early 1900s only just getting electricity did.

But people only just getting electricity in the early 1900s easily benefited more than were harmed by such things. Poor dental health gets scary quick.

I guess the question becomes how low do you lower the bar for those who would willingly devoid themselves of sane things to include in their lives. How much freedom does one man have to harm his self, though he thinks as a self, costs to him are more often than not also costs incurred to society (and usually a society that'd prefer to not see people do self harmful things)

At least in the US though, it seems that popular opposition to fluoridation started with cold war era conservative conspiracies (precious bodily fluids). So, you know.