The name used is for the languages spoken within Iran, which is the South Azeri dialect written in the modified Arabic alphabet.  Thus, it is inconsequential how the language/alphabet of another country uses such a term.  For example, if the term Iran was used different in say the Persian of Afghanistan, it is inconsequential for an article on Iran.  In Iran no one writes: "Güney" with such an alphabet in the Azeri publications there (say newspapers).  Because first of all, they use the modified Arabic alphabet and second, it is politically charged.  Second, the same region (a good portion of it like all of Western Azerbaijan) is called by Kurdish nationalists as "Eastern Kurdistan".  For example, in the Northern Federal region of Kurdish Iraq, they use East Kurdistan for all of West Azerbaijan with their own alphabet.  However, this does not mean we put "Eastern Kurdistan" in say the article West Azerbaijan for Kurdish language or here.   Thus what matters is mainstream and official publications within Iranian Azerbaijan, and even the term "Güney" is not used that much as the word "Jonub" is used for "South" more often then "Güney".   Also, please do not edit war, given the fact that your block was just lifted by adding controversial items.