To be fair, the Seattle "kielbasa and cream cheese with grilled onions" that was prominent from 1996 to 2005 or so was never called anything but a "hot dog." The sriracha/cabbage iteration, which I saw for the first time out clubbing like eight months ago, was also called a "hot dog." I don't believe they mean "this is a Michigan dog" they mean "this is how Michigan thinks a proper hot dog is served."

Yes, I have regional pride that Seattle's regional hot dog is not a fucking hot dog. I think I was there when it started; there were these Serbian/Croatian/Armenian/Russian/Turkish vendors who decided drunk people would probably pay a couple bucks for a "hot dog" rather than careening up 99 to Beth's so they'd start grilling onions. I'm not convinced it started with kielbasa, it might have been sujuk initially. Either way you'd smell it and go "this is a terrible idea" and then you'd buy two and by the time you decided you needed a third the line was too long. At that point pretty much every vendor knew that fuck hot dogs, this is what was selling.