No idea where that article came from but it's from 1947, where the effects of smoking were less studied.
In any case, smoking addiction is due to both a psychological and a physiological factor. The physiological part is nicotine addiction:
Why is smoking addictive?
Cigarettes contain nicotine, which is highly addictive.
Even if you want to quit smoking, you may find it difficult because you’re addicted to the effects of nicotine. Some research has suggested that nicotine can be more addictive than heroin.
Chemicals in your brain
Nicotine alters the balance of chemicals in your brain. It mainly affects chemicals called dopamine and noradrenaline. When nicotine changes the levels of these chemicals, your mood and concentration levels change. Many smokers find this enjoyable.
The changes happen very quickly. When you inhale the nicotine, it immediately rushes to your brain where it takes effect. This is why many smokers enjoy the nicotine rush and become dependent on it.
The more you smoke, the more your brain becomes used to the nicotine. This means that you have to smoke more to get the same effect.
Effects of quitting smoking
When you stop smoking, the loss of nicotine changes the levels of dopamine and noradrenaline. This can make you feel anxious, depressed and irritable.
It’s normal to crave nicotine when you quit, as smoking provides an immediate fix to these problems.