> The wording is strange, it looks like they say that it is wrong to say that it is inauthentic. But, there is no doubt, if you buy Greek feta that is manufactured in Australia in addition with different recipes and ingredients origins, it is clearly inauthentic and deceptive.
You can use the same recipes in Australia as in Greece. Ingredients could be tricky, but let's assume that you can make sheep milk in Australia that has the same properties as Greek sheep milk. Then why should it matter where the feta has been manufactured?
No, it's a trademark. That's effectively what PGI is, and unlike patents and copyright, trademarks have a direct benefit to the consumer (they know what they are getting. Nobody is stopping people buying a Gutchy handbag, but the selling can't pass it off as Gucci)
Same with "100% Florida orange juice" or "Idaho potatoes". I can buy "Southern Style Whiskey" and that's fine, but if I see "Tennessee whiskey" I am assured it's made in Tennessee. That may be important for me, it may not be, but I have the power.