I would assert that for regional brands that the EU is trying to claw back after decades of generic use, they may be more historical but they are not more accurate. Suddenly restricting "feta" to a cheese of Greek origin, after it's been used as a category for so long in so many places, is an effort to change
This is quite different in my mind from things like Champagne, Taleggio, Stilton, etc. that have been consistently protected and therefore should continue to have a protective right over their product.
They are trying to corner existing markets