@impuls4444 - I agree it would be better, I think, if the Origin tag meant place of birth or where the model grew up if she moved as a baby or young ***** - though there are more complications than that when it comes to second or third generation immigrants.
But unfortunately that is not how it is currently being used and in some cases I believe that there are models, certainly girls in the wider porn industry, who are deliberately giving false information as part of an effort to keep the folks back home from knowing what they are doing, though in most cases just changing the city rather than the country would be adequate for that purpose. I do not in any way object to them doing this - though it may be a bit pointless once their pictures are all over the internet.
Your remark about you being a Ukrainian living in Italy etc. is very relevent. However, I am a Brit living for many years (much more than half my life) in Germany know other Brits who now pretty much regard themselves as Germans, British families whose children regard themselves as Brits and other superficialy similar families whose children think of themselves as being German. Its all very fluid. For the record I think of myself primarily as a European, secondarily as English and not at all as German. My sister, who has lived here for a similar length of time, pretty much thinks of herself as being both German and English. It gets even more ***** when you include French and Germans from Switzerland or Luxembourg or when husband and wife are from different countries, often neither being from where they now live.