Just out of interest, and not detracting from what you're saying, but normal fluoride also forms a compound (flouro-apetite) more resistant to avoid than normal

Just out of interest, and not detracting from what you're saying, but normal fluoride also forms a compound (flouro-apetite) more resistant to avoid than normal tooth material (appetite). At least according to this chemist: https://youtu.be/vtWp45Eewtw https://youtu.be/vtWp45Eewtw (tooth chat at 5:10, but the whole video is interesting)