I used to smoke cigarettes for many years. Over a decade. In the last few years of smoking, I tried to quit numerous times, trying to replace it with vaping because nicotine is what I'm addicted to, right? So I shouldn't have that hard a time, it's about breaking the physical habit not the drug addiction since I'm not quitting that. Often I would go a few months. The last failed attempt, withdrawals gave me panic attacks well into 3 months in. So I gave up, got some cigarettes, a year later I tried again and succeeded, I'm a few years smoke free.
I'm still addicted to nicotine, I vape. But I wake up, where my vape is is not the first thing I think about. I dont plan my day by how much nicotine I have left. When I get under the weather I can give it up for a few days with no problem. This is not the same addiction I had when smoking cigarettes, this is a milder, more casual thing, I don't get cravings, I get these small little desires for a puff. Whatever is going on with cigarettes, nicotine is only a small part of that. Quitting cigarettes is one of the hardest things I've ever done, I could not vape for the rest of the day and only feel a mild annoyance. In my experience the article is correct, there's something more going on with cigarettes than just nicotine.