Summary
Robert F. Kennedy Jr. announced that a Trump administration would prioritize removing fluoride from public water systems, a position at odds with major health organizations like the CDC, the American Dental Association, and the American Academy of Pediatrics, all of which endorse water fluoridation as safe and beneficial for dental health.
Despite Kennedy’s controversial stance on health and environmental issues, which includes previously debunked claims linking vaccines to autism, Trump has praised his passion, stating that Kennedy would have significant freedom to influence health policy if Trump were elected.
You can find studies saying anything you want if you look. Find a meta-analysis and see what it says about all the studies together.
https://pmc.ncbi.nlm.nih.gov/articles/PMC3491930/
Yes, high concentrations of anything aren’t good for you. That study found a negative effect at comparatively high levels, but did not quantify any safe level, let alone conclude the safe level is zero.
Based on known performance in areas with lower fluoridation (≤1 mg/L), it would suggest there is a safe limit that can improve dental health without neurotoxicity.