Doubtful that that helped him. The nature of statistics are that their are some anomalies. On average a smoker and a drinker won’t last as long as someone with a healthier lifestyle. Doesn’t mean that a trim marathoner with no vices can’t die at 40 and that a fat slob who drinks a lot can’t live to 95.
All 4 of my grandparents lived into their early 90’s (one made 96). All smoked most of their lives. One grandfather smoked till his death and one grandmother gave up smoking in her 70’s, but chewed tabaky into her 90’s.
My mother died of cancer at 47 and never smoked. I don’t smoke and I’m convinced it’s bad for you, but I don’t believe all the hype about second hand smoke.