Because Wikipedia is more accurate about something than real life. It's like the joke with 2 guys in cubicles, the one next to the windows tells the other it is snowing, the other asks for a link as proof.
Wikipedia has citations, someone claiming to be Argentian and making vague unsubstantiated claims that a US Senator's political ideas ruined his country smells more like astroturfing than "real life".
Do you want a picture of my passport? I can easily provide it.
I didn't say that it was Bernie's ideas what ruined my country, just that the kind of policies he preaches have been applied here for decades. Don't take my word for it, just look for any of Cristina Kirchner's speeches, and you will see.