It’s gotten more expensive, but it just depends on what kind of lifestyle you live. The 210k example is not the norm, but this person lived extremely well: Both children went to private school, they lived in a nice home in a ‘country’ (what the Argentines call an upscale gated community), wife did not work, and they were able to travel abroad each year and would clean out the outlet stores in Orlando and stock up on clothes, electronics, and just about all the other stuff that is over priced or of poor quality (just about everything except leather goods) in Argentina.
Depending upon what you are used to and of course if you are single/married/or have kids, I don’t necessarily think it’s necessary to earn a whopping US style salary to live well, especially taking into account that two of our largest expenses in the US: Health care and education, are free or way more affordable, and often times better, than in the States, that factor alone puts some money back into your pocket.
Also if you are like this guy and make enough to be able to travel back frequently, just do as he did and buy ABSOLUTELY nothing till you travel to the States. You will be spending your money on rent, expensas, basic everyday expenses, and food.