Like "feta" which is a style of cheese across the balkans, if you look in Melbourne Qeen Vic markets you can find Greek, Turkish, Albanian, Bulgarian, Danish Feta, fighting it out when the lights are off... But no, now it's DOC/PDO and so we're going to have to change its name.
DOP/GI is a scam unless it's policed. People try to retconn things into it (prosecco)
Champagne, I can get behind. I don't mind Aus bubbles being sold as -style because they're bloody good.
It shouldn't even mean this much, frankly, as those things are merely protectionist trade policies meant to artificially drive up the price of certain goods without regard for quality. People on the Internet give too much deference to politicized trade regulations.