I'm not sure why this isn't recognized as a great success.
Once a large enough portion of the population were no longer smokers, it was inevitable that many lung cancers would be in smokers. What is important in all of this is not "large sounding numbers" of people, but the percentage of the population, as a whole, who suffer from lung cancer. And a further confounding factor life expectancy today vs even 30 years ago (the longer one lives, the more likely it is for cancer of any kind to develop).
Once a large enough portion of the population were no longer smokers, it was inevitable that many lung cancers would be in smokers. What is important in all of this is not "large sounding numbers" of people, but the percentage of the population, as a whole, who suffer from lung cancer. And a further confounding factor life expectancy today vs even 30 years ago (the longer one lives, the more likely it is for cancer of any kind to develop).