Nah, nicotine is very addictive by itself. But yes, the additives make it even worse.
I agree though, it’s disappointing that governments don’t have better labeling regulations on “sinful” products. Alcohol: why not require a list of ingredients and calories? Cigarettes: same thing, show what it has been processed with, etc? Like how the EU used to require showing how much tar and nicotine each cigarette contained, but realized all the producers started to fake the testing machines by designing holes in the filters (like “light” cigs) where the user’s lips would otherwise cover when smoking.