The fundamental problem with this question is that it's founded on a false premise. The question assumes that "hot dog" and "hamburger" are named so because of the form factor of the bread, but hot dog refers to the sausage, not the bun. As for hamburger, in addition to deriving from its place of origin (Hamburg, Germany) it also refers to the specific sandwich in which beef is mashed into a patty and served on a bun. You wouldn't, for example, refer to a chicken sandwich as a chicken hamburger. But on the opposite end of the discussion, the word "taco" does refer to the form factor of its bread (be it a soft-shelled tortilla or the crunchy corn shell variety), with variations of beef, chicken, pork, and vegetarian options all referred to, without error or contradiction, as a taco.
Therefore, if one were to categorize a hot dog as anything other than a hot dog, it would be incorrect, because even if you put a hot dog on a hamburger bun, it wouldn't be a hamburger by definition due to its exclusion of beef. And if you put it in a taco shell, it would simply become a variety of taco.
At this point in the discussion, more perceptive readers might be quick to point out that there exist variations of hot dog, as well; conceptions such as "turkey dogs" being a common diet-friendly alternative to the mainstream pork iteration. But those aren't types of hot dogs, they are alternatives derived from the concept of a hot dog. Consider this, does the existence of soynut butter--a soy-based alternative to peanut butter targeted towards people with nut allergies--essentially recategorize soy as a variety of nut? Is the self-insert Animal Crossing fan character that some twelve-year-old on DeviantArt uses to vent their repressed feelings for Tom Nook an official Animal Crossing character, just because some shady website stole the art and used it for their bootleg merchandise? Nay, I say! Nay!
We, as a society, must wake up and educate ourselves to the root of these issues before we allow misinformation to spread. Only then can we tackle real, serious issues like this one in a civil and productive manner. And if you disagree with any of my above-mentioned points, then the odor you emit is probably quite repugnant and Tom Nook doesn't love you nearly as much as he does me-- I mean, Ellebasi, the large-bosomed cat who is the best mayor ever and indisputably perfect at absolutely everything.
Therefore, if one were to categorize a hot dog as anything other than a hot dog, it would be incorrect, because even if you put a hot dog on a hamburger bun, it wouldn't be a hamburger by definition due to its exclusion of beef. And if you put it in a taco shell, it would simply become a variety of taco.
At this point in the discussion, more perceptive readers might be quick to point out that there exist variations of hot dog, as well; conceptions such as "turkey dogs" being a common diet-friendly alternative to the mainstream pork iteration. But those aren't types of hot dogs, they are alternatives derived from the concept of a hot dog. Consider this, does the existence of soynut butter--a soy-based alternative to peanut butter targeted towards people with nut allergies--essentially recategorize soy as a variety of nut? Is the self-insert Animal Crossing fan character that some twelve-year-old on DeviantArt uses to vent their repressed feelings for Tom Nook an official Animal Crossing character, just because some shady website stole the art and used it for their bootleg merchandise? Nay, I say! Nay!
We, as a society, must wake up and educate ourselves to the root of these issues before we allow misinformation to spread. Only then can we tackle real, serious issues like this one in a civil and productive manner. And if you disagree with any of my above-mentioned points, then the odor you emit is probably quite repugnant and Tom Nook doesn't love you nearly as much as he does me-- I mean, Ellebasi, the large-bosomed cat who is the best mayor ever and indisputably perfect at absolutely everything.