Not physically addictive, no. The physical addiction to nicotine lasts 3-7 days, while caffeine is 7-14.

It's not the nicotine that has you truly hooked, it's the habit. It's the fact that it's always on you and you can often hit it as much as you want.

Back before shitty closed disposable systems became popular, people regularly dropped to 0 nicotine without any trouble besides some cravings for a few days (which were about the equivalent of caffeine withdrawals).

I'm way more addicted to vapes than cigarettes. Only reason I ever touch smokes is when I can't afford a 30$ vape and can only swing 7$ for a pack to get by.