The differences in addictivity between alcohol and nicotine seem like a pretty significant difference
And nobody has ever died from nicotine withdrawal. Or smashed their car after inhaling nicotine.
The method of delivery killed those nicotine addicts. None of those nicotine addicts died as a direct result of what nicotine does to the body. Combusting tobacco and inhaling the smoke is what killed them (ignoring chewing or snorting).
If I used a patch, I can continue my nicotine addiction without fear of lung disease. I can't do the same with smoking.
There's no method of delivering a habitual psychoactive dose of alcohol that doesn't cause harm.
But all said and done, I'm not sure vaping nicotine, with all those flavours, has been proven safe. There's a lot of talk about popcorn lung.