I agree. People always talk about technicalities, ingredients, structure, etc. in this argument.
For me, the main reason why a hotdog isn't a sandwich is that you can't use the two interchangeably. I would never go up to a hotdog stand and ask for a sandwich.
Right. That's why hotdogs are not even food, or organic matter. I would never go up to a hotdog stand and ask for organic matter.
I think hot dogs are vegetarian but not vegan. As in, the stuff in a hotdog may or may not require the killing of the animal.