They close the story by saying that Fluoride doesn't protect teeth, as proven by some non-fluoridating countries having equally good teeth (ignore the fact that they all use evil fluoridated toothpaste). They then graphically show how fluoride rots teeth.
YOU CAN'T HAVE IT BOTH WAYS. Either they have equal dental health and fluoride has no effect, or fluoride rots teeth and there should be a marked difference. I'd trust a 6-year old to spot that contradiction.