The idea of fluoride in drinking water is to target babies and children as their teeth develop so that fluoride gets integrated into the tooth. There were poor areas where dental health was limited and kids were neglected by their parents or whoever and dental decay was rampant in these kids. I believe the original intent was perhaps honorable, but with newer research about ill effects of fluoride I don't believe it should be in the water for everyone all the time, especially vulnerable children as they are developing. Taking fluoride out of drinking water to make water as pure as possible for people I think is the right thing today.
Dental education and providing dental care to poor and uneducated communities will be needed to help these children. More dentists will be needed as we see more decay that must be caught early to avoid serious infections and hospital visits/admits. Early loss of baby teeth without proper care can lead to serious dental issues and costs later on.