I was just kidding, Pentaz. I guess that this is pretty much stereotypes that comes to peoples' minds when they think of Balkan.
Though of those countries, I see nothing in common with culture of Slovenia when compared with culture of Bulgaria, or like culture of Croatia compared with Romanian one. Maybe there is some folk-dress similarities, some cuisine here and there, some elements of mentality/temperament, but I agree that there is not one unified Balkan culture.
I am sure in ancient times there was, but now indeed it has changed thanks to outside influences.