Anyone travelling to Argentina has to recognize that these types of "problems" happen with some regularity. I know I previously was caught up in an Argentine airline strike. If you absolutely have to be home by a certain date, I'd give myself a couple days of buffer time.
I considered my November trip to Argentina a success because I only ran into one strike.

I was driving around Patagonia, and the oil company workers went on strike for a few days. So no gas in Patagonia! Of course, nobody warned me -- I found out when I tried pulling up to the closed pumps.
I don't think these troubles should dissuade most folks from visiting Argentina. It's got great culture, scenery and food, and is a terrific value. But folks who can't roll with the "unscheduled" and "unpredictable" should probably vacation elsewhere.