I suppose so, the article by Vickery that Neil posted is good but very subjective. I see Brazil lost that game but I'm pretty sure about them dropping in some hours before the game.
Basically it's a South American situation so their Federation should sort something out that's fair. I don't know, but I'd assume that they were still squabbling over some venues selected for extra altitude effect and FIFA stuck the boot in, maybe they couldn't mediate and just legislated
Personally I could adjust to high altitude after some time but never in a month of Sundays adjust to a humid 40C