Just put where it's manufactured on the label - that's really all that matters.
Just wait until the Germans join the fun, with Hamburg having the copyright on Hamburgers and Frankfurt on Frankfurters.
No one is confused, and if people really care where it's made they can look at the label. This is just trying to use the force of law to limit competition and favor incumbents. They want to claim something is a trademark that isn't.
Actually yes, when we talk about Champagne we DO talk of the location too, because the land has a specific soil which impacts the final taste. Even in France we have tons of different sparkling white wines which are not champagne, no big deal. But champagne is champagne, not any sparkling wine.