There was, though, a famously non-charitable reading of it as Hitler apologia, since Space Hitler (Ender Wiggin) goes to a Portuguese-speaking colony to prove that his genocide was just a misunderstanding and he's just a regular guy who also happens to be a genius at interspecies diplomacy. I think it was at least a little tongue-in-cheek, seeing as Card has perfectly plausible mundane explanations for those influences (missionary work in Brazil, for instance).

Card still freaked out and wrote a long, rambling reply to it that came across as unhinged. As far as I can tell it's been purged from the written record. Can't find it anywhere.