You can be happy about a decision while still understanding the business rational behind it.

They’re not sold as ‘hot dogs’ but I’m pretty sure there isn’t a place in Germany where plain old bratwurst in a plain old bun isn’t a thing.

The standard hotdog you can find in Germany consists of a bun and sausage with ketchup, mustard, crispy onions, pickles and sometimes cole slaw.

Where would that be the “standard”?
The most common sausage in a bun combination is just sausage, bun, ketchup/mustard.
Unless you’re specifically talking about restaurants that have an item called “Hot Dog” on their menu, which in turn is rather rare.