Calm your tits bro. "So called" is used here as "named as". Also even though zeibekiko is brought to Greece from Anatolia during the population exchange, it's a separate dance of it's own at this point with different movements.

And why it bothers us so much that we share same foods and dances with people we lived together with for over 400 years? Neither they stole yoghurt, nor we stole fasulye. We shared those for centuries. So long in fact that they became inseparable from our cultures.

If the marketing is what bothers you, Greeks are better at appearing more peaceful and agreeable so it's easier for the rest of the world to accept their marketing. Maybe we should also try to co-operate with the world instead of being violent and picking fights at every turn.