Just generally unhappy or do you have specific points that might help travelers? I dislike GRU but don't know what lounge you're using (only one I've used is the United Red Carpet Lounge), and have no idea what you mean by a "bovine local traveling population." Slow? Ignorant? Fat (like Americans)? Please enlighten.
Brazilian airports are for the most part woefully in need of expansion and upgrades, and official pronouncements that all will be fine for the 2014 World Cup and 2016 Olympics are a joke (the government has a big deficit and has declared it won't cut back on social programs; plus there have been instances of corruption).
Some posters here think GIG is the worst airport in the country while others vote for GRU. Brasilia is pretty nice until you get through security and then it's cramped and confusing. Recife, served by American Airlines, is relatively
nice. Fortaleza, where we are, has a smaller, more antiquated facility.
One thing travelers need to be aware of if transferring from a domestic flight
to an international one in Brazil is that while your bags should be transferred to your international flight, you will likely need to exit security and stand in line at the check-in desk of your international airline, with people just starting their trip, and get your boarding pass.
Bottom line for me is that you don't expect a great experience and then can be pleasantly surprised if you have one.
You might want to post a review of the lounge at
http://www.airlinequality.com/Product/Lounges.htm