Spitting was necessary because swallowing tobacco represents an immediate, acute food poisoning issue due to the other chemicals present. It's also all sorts of cancerous, including to the mouth, also due to those other chemicals.

We developed, in Snus, an apparently cancer-free chewing tobacco. We developed, in Zyn, a cancer-free, hygienic chewing tobacco with fewer GI issues. We developed, in e-cigarettes / vapes, a cancer-free, COPD-free, carbon monoxide free cigarette.

These should be regarded as public health miracles even if there remain some symptoms of partaking. If 80% of the population is addicted to Zyn or vapes but there are no smokers, you get far better health outcomes than a situation where 20% of the population are smoking and 5% are chewing.

It's comments like this that makes HN what it is. I am absolutely in awe and I applaud you good sir, this is truly a masterpiece.