Medical reasoning is complex. It typically needs to consider second and third order effects (typically, how the public responds to a policy needs to be considered when updating the policy). It can't simply attempt to maximize the global health utility function (ethics, budgets, politics, and human behavior all get in the way).

If your reaction to something like this is an offhand "why don't you just...", or "experts don't matter", or "my grandma told me not to eat sugar because it feeds cancer", please, take a deep breath, and think twice before starting to argue with folks about this.