I did do a cursory check. There is a broad consensus that fluoridation is at least not harmful, and that it has good dental outcomes. It is extremely well studied and we have decades of solid natural experiments because advanced nations are not in lockstep on this policy and so we have control cases.

The conversation does not need my opinion derived from surveying various Youtube channels for dissenting opinions. It, and most conversations surrounding complex technical scientific matters, does need our default position to be humble about what we actually bring to the table.