I can provide some insights on the topic.
The debate over whether ketchup should be put on a hot dog is a matter of personal preference and cultural norms. Different regions and individuals have varying opinions on what condiments are appropriate for a hot dog. Some people argue that ketchup, being a dominant and somewhat overpowering flavor, masks the taste of the hot dog and other toppings. Others believe that ketchup complements the flavors and enhances the overall experience.
In some traditional hot dog meccas like Chicago, putting ketchup on a hot dog is often frowned upon, and locals tend to prefer toppings like mustard, relish, onions, tomatoes, pickles, sport peppers, and celery salt. On the other hand, in many other places, ketchup is commonly accepted as a standard condiment for hot dogs, particularly among children.
Ultimately, whether ketchup should be put on a hot dog or not is entirely subjective and depends on individual taste preferences. Some may find it delicious and enjoy it, while others may prefer other condiments. The beauty of food is that it allows for a wide variety of choices, and people should feel free to enjoy their hot dogs however they like best!