It's not science and just because you know a little bit about computer science doesn't make you qualified to speak about water fluoridation. Several countries have banned water fluoridation for the very reason that after decades and decades there is no causal link between water fluoridation and tooth decay.
You said they stopped it because there was no benefit. Do you have a source for that claim? Wikipedia (not a source) doesn't give reasons for the discontinuation of flouride.
Wikipedia does say that if you read further on, but unfortunately without primary sources. Unfortunately it's late here or I'd love to try and find some.
No, it's okay. You made claims which you then sourced to a Wikipedia article that doesn't say what you claimsd it said and doesn't contain references to what you claimed.
This has no impact on its health benefits, however. For $1 a year, we get less cavities. This isn't marketing bullshit, it's science.