Nah, it isn't entirely incorrect. As for the 'it isn't even called so-and-so in the whole country' I would hope so. It's like pop and soda in the US.
My most disappointment came from the fact not everyone eats pretzels for breakfast in Germany. It's only in some parts. Lucky for me I was staying with someone who came from that part.
Ah right. Ukrainian. My bad. I remembered wrong.
S'not a big deal to me anymore. Maybe if I could learn more that'd be another thing.