Fair point. But it seems like once they’ve gone to that trouble the hot doggers just go the extra mile and turn that objectively-no-different-from-terefah meat into something delicious rather than a foul, skinny tube of bologna.
Look at the video of Vienna beef hot dogs being made (which I don’t think are kosher, but rather just all-beef hot dogs. There’s little “garbage” meat I see going in there. (Though even if there was, I wouldn’t mind it at all. Use all the parts of the animal and waste not.)
The idea that all hot dogs are just “lips and assholes” isn’t true.
Regular boring yellow mustard? It’s kind of vinegary, but “sinus-burning” and “taste overwhelming”? That seems like extraordinary hyperbole. You’d probably have a seizure if someone gave you some of this salsa.
Personally, I’m sort of catholic about hot dogs. Mustard (yellow or brown), relish, kraut, chili, and cheese are all things I put on hot dogs with regularity. Ketchup isn’t my thing, but it’s not as bad as it sounds. What I can’t quite get into is the Chicago-style dog, in that it’s got SO much other strongly flavored crap on it that the flavor of the hot dog itself gets overwhelmed, IMO. I don’t want a salad with a hot dog under it, I want a hot dog.
And lots of the bits that are included in regular hot dogs aren’t allowed in Kosher food. Hebrew National, for example, only takes premium Kosher cuts from the front half of the cow. I really do think they use better cuts of beef than other hot dogs, with scraps and other parts not making the cut, but I’m not sure how to document that. I do know they taste much better.
Well, that is the crux of the OP, clarified in post #12. Serving hot dogs with ketchup already on them, not consuming hot dogs with ketchup on them.
Here, in the Chicago area, if I got a “hot dog, everything” and ketchup came on it, I would be a bit taken aback. I’ve seen exactly one real hot dog stand in the city do this (the name escapes me, but it was just a bit west of the literal Loop el tracks, maybe on Washington or Randolph or possibly Lake). Around here, a “hot dog, everything” could mean a few different things (in my neighborhood, it was mustard, onions, relish, pickle spear, no celery salt, no tomatoes, sports peppers optional, plain bun, not poppyseed), but at a classic Chicago hot dog stand, it never includes ketchup. Sure, maybe at places serving up Mexican/Sonoran-style hot dogs, you’ll find that sometimes along with mayo and other accoutrements, but that’s a different beast.
But in different places, it’s a different story. Ted’s Hot Dogs in Buffalo, NY (my favorite non-Chicago hot dog establishment), for example, if you get a hot dog with “the works,” it’s mustard, onions, relish, pickle spear, and hot sauce. The “hot sauce” is basically just doctored up ketchup and not really spicy at all so far as I can tell. Maybe somewhat reminiscent of Heinz chili sauce.
So, when in Rome … I do like to experience how the locals do it.
We clearly need to do a Doper double-blind hot dog taste test. 
Ah. I see now.
I found post #12 unclear, to say the least. And I interpreted the OP as “serving to one’s guests.” If a guest of mine wants ketchup on his/her hotdog, that’s the way they’ll get it.
I had no idea that (excepting chili on chili dogs, obviously) there are places that put the condiments on for you.
OK, I guess maybe this is more the norm than I thought. Outside of gas stations and ballparks, I haven’t really been to hot dog places that don’t put the condiments on for you. I don’t want to dress my dog any more than I want to dress my burger. The server should do it for me. They do a better job of it, anyway. I want the mustard to be slathered on with one of those popsicle stick thingies or a knife – you get a nice spread that way, not too thick, coating a good portion of the dog. You just don’t get the right kind of coverage with a squeeze pump. And onions and relish? I just make a mess of it.
Here’s a video of Ted’s hot dogs in Buffalo with the grill guy putting on the condiments. That’s how I want it done. I can’t do it as nicely myself.
The problem is that servers shouldn’t assume you want ketchup (or mustard) on a hot dog or on a burger. Some do, some don’t. Give the customer a choice. I have to take considerable effort to get a plain burger, and they frequently put crap on it anyway.
Oh well, no one said life would be easy.
You always have a choice, in my experience. If you don’t like ketchup, say “no ketchup.” Where it becomes confusing is, when I said in my case, around here “ketchup” is never assumed in an “everything on it” order. In other places, it may be.
And soft pretzels.
I do, of course, say “no ketchup, no mustard, no mayo.” I get that. I’ve lived long enough to know that restaurants put that stuff on burgers even if the menu doesn’t mention it. And, in recent years, more places heed my request. Still get an occasional screw up, but I can handle it.
This is what is so laughable about the whole ketchup debate. So the people eating hot dogs with ketchup in a corner store in Chicago don’t count. People eating Mexican style hot dogs in Chicago with ketchup don’t count. (Which is pretty funny in a city that’s now a third Hispanic.) Only self-appointed “real hot dog” places count. So because Chicago has self-selected hot dog monitors (undoubtedly the same people who were hall monitors in school) say we can’t have ketchup on hot dogs in a city where many people eat that way anyway, no one in the universe can have ketchup?
Chicken, actually, seems to be the most popular here. I don’t know why. Cheaper than beef, I suppose.
And they’re pretty good.
I’m unsure what you’re railing against. Perhaps I was unclear.
You can get ketchup almost everywhere on a hot dog here in Chicago. There are a very small handful of places who don’t do it but, rest assured, 99% of the hot dog stands you go to you will be able to get ketchup.
It’s just the standard “everything on it” order in Chicago does not include mustard, just like elsewhere “everything on it” does not include tomatoes or celery salt or sport peppers. (Mexican style hot dogs are not easy to find here. I live in an 80% Mexican neighborhood. The hot dog stands are not run by Mexicans. I have to go down to 26th Street if I want to find one of those delicious bacon-wrapped hot dogs with mayo, mustard, ketchup, jalapenos, and and grilled onion. It’s not a standard street food here, like it may be in Tucson, or at least not yet.
I’m weird when it comes to hotdogs. At a Chicago area hot dog joint, I’ll usually order mustard, onions, and relish. At home, I use ketchup and melted Velveeta. 
I don’t know that I’ve seen a “hot dog place,” period, in the sense of a permanent structure where you go inside to order, whether it has seating or not, whose main menu item is hot dogs.
There are booths at carnivals and fairs that sell hot dogs. There are food trucks that sell hot dogs. And there are probably some general-purpose family restaurants that serve hot dogs and a hundred other things, like a Denny’s or something. But I don’t think I’ve ever seen a restaurant that does enough business in hot dogs that one would think of them as a ‘hot dog place.’
Looked up “hot dogs” for my county on Yelp. Got five hits: two Five Guys, two delis, and one food truck. The food truck was the only one with dogs in the name. There apparently are a few actual hot dog places in DC or NoVa, but on the whole, they’re not really a thing in this part of the country.
What is this “hot dog” thing you speak of?
Is it the long, thin hamburger?
You need to go to Iceland. The hot dog culture is wonderful, as are the dogs.
I’ve heard of Wienerschnitzel and Dog n Suds, but it’s been a log time since I’ve seen either.
That led me to Wikipedia’s List of hot dog restaurants. The one on that list that I’m familiar with is Springfield, Illinois’s Cozy Dog Drive In, which actually specializes in Cozy Dogs (corn dogs).