And who generated all that compelling evidence? Anecdotal evidence? My paternal grandmother was adamantly against smoking and didn't allow smoking in her home. She had one cancerous lung removed, but it came back about a year later and she died of lung cancer at the age of 73. My dad, who smoked all his life, died at the age of 80. His dad, who never smoked, died at the age of 80. One of dad's sisters, who only smoked a couple of years as a young woman, died of cancer at the age of 64. My mother, who didn't smoke, but grew up in a home with a father who smoked, then lived for 58 years with a husband who smoked, lived to be 85, older than anyone in our family has ever lived. And when my dad died, the death certificate has a question - "was the death smoking related" and with no evidence whatsoever that smoking had anything to do with it, the doctor marked it "probably". I guess stretching the truth is OK if it helps confirm what you already believe.
I'm certainly not saying that smoking is good for you, but we've been fed such a string of lies by the anti-smoking crowd that the number of dumbasses (as you say) who buy it hook, line, and sinker is incredible.