Not sure if this is relevant, but reusable e-cigarettes can often be found in specific smoke shops or resellers (?), whereas cigarettes can be found in corner stores and gas stations – to this point, an argument can be made about accessibility or exclusivity. There's also a difference between the carcinogens in cigarettes and e-cigs. E-cigarettes contain formaldehyde, while cigarettes contain tobacco smoke. Both can cause lung cancer.

https://www.cancer.org/cancer/cancer-causes/tobacco-and-cancer/e-cigarettes.html

https://www.cancerresearchuk.org/about-cancer/causes-of-cancer/smoking-and-cancer/how-does-smoking-cause-cancer

Burning cigarettes release noxious fumes such as hydrogen cyanide and carbon monoxide that often contain tar (which has carcinogens!). Because e-cigs don't release these toxic fumes, they are often seen to be a better alternative to regular cigarettes.

An E-cigarette is an electronic device that works by heating a liquid which produces a vapour that the person inhales. While an e-cigarette doesn't contain nicotine or tar like a traditional cigarette, it does produce other toxic chemicals.