When the protection of children from long term hazards are weighed against immediate risks, the immediate often takes precedence.
If one was to compare the risk to life between using seat belts and eating dairy products, the risk of death in a car accident is very small compared to the near certainty of an agonizing debility in later life due to the foundations for cancers, vascular diseases and many other ailments being laid down in early life.
The difference is the very occasional but immediate evidence of the former compared to the delayed response of the latter. Associated with the comparison is the huge marketing effort put into persuading parents that dairy products are essential for good health.
Whereas there is ample proof that dairy products inevitably cause disease and premature death, there is an abundance of false information and a dearth of scientific data supporting the health giving benefits of milk.