Nimoy lived a good long life, though I think hampered by COPD. Serling was early 50s. Coon wa s young too, yes?
Not to be a devil's advocate, but noting a certain Gracie Allen in the list, it popped into my mind that George Burns was photographed smoking big and thick cigars up to 1986 (aged 90), if not later. His death was due to complications from slipping and hitting his head, with no known signs of lung diseases ever found. One's not going to see names like his in that article, but that isn't to say the numbers don't show a legitimately higher chance of probability...
Many of those on the list still died at the same age range as most people - 70s or 80s, just of another cause, but most people, even today, say "good life" if they make it to their 70s regardless of what does them in and are quite correct.

But those dying in their 60s, or especially earlier, are of comparative interest as they do show spikes in the proverbial Pareto and Scatter charts. Correlation isn't always proof of causation (Just as Burns and a list of those who had puffed all their lives and didn't get cancer as a result certainly won't say anything definitive about the opposite condition that the list of "smoking deaths" was), but it's still something of fascination to go on regardless... and while ciggie smoking may not be the root cause but still be a contributing factor. That's the fun part, individual biochemistry as opposed to more blanket conditions...
Ultimately, had there not been lung cancer or emphysema flowering due to cigarette smoking, chances are they'd have lived several more years. But that's purely speculative. A healthy jogger could even die of a heart attack by age 35, with no bona fide underlying reason, including foul play... or fowl, if cholesterol count is within healthy range.