Perhaps I shouldn't have said nothing works here, some things do work, and some rather well, just not any that emanate from government offices. I know someone who suffered a similar tax scam as the businessman in the article. The person brought in money to buy property but that's another story.
To answer your question nobody has lost property as the result of government seizure to my knowledge, nor or are there any plans by them to do so. I would rate the possibility of this happening as low today. However the possibility of this in the future could change. If they seized your apartment tomorrow you might have little or no recourse. That's the problem with investment in Argentina.
Keep this in mine, the current government is allied with the several of the left wing governments in the region which have expropriated property. Take a look at what Hugo is doing with real estate to the North.
http://www.globalpropertyguide.com/investment-analysis/Rise-of-the-left-the-fall-of-real-estate
A lot could happen here between now and the next election. I don't think the Kirchners plan on leaving office voluntarily. Could the government swing further left in an attempt to keep them in office longer? Could Argentina become a lot more like Venezuela?
Expats in Cuba have been waiting since 1959 to be compensated for the properties and businesses they lost.