In my opinion this is splitting hairs. Chewing tobacco, cigarettes, cigars, etc., are tobacco products having tobacco as a main ingredient. Nicotine gum, pouches, patches, and ecigs are nicotine products as they have nicotine (synthetic or derived) but no actual tobacco. If the got the nicotine from eggplants you wouldn’t call it an eggplant product.

Almost all of it is tobacco-derived, which is why I always found the "tobacco companies are trying to get vapes banned" idea ridiculous. They're the ones making the stuff that goes in the vapes.

I think the point of the distinction is regarding cancer. Tobacco on the gums causes mouth cancer, nicotine maybe maybe not.