Actually, I wonder if, in the vacuum, the fact that heat exchanges are roughly limited to radiation, wouldn't make an excess of body heat a plausible issue (if the other problems somehow weren't important enough). After all, the main temperature problem space engineers face with inhabited space structures is not warming, but cooling.
Anyway about the comic: this reminds me of a conversation I read on a forum. A guy said that he found weird the number of girls who had tried to flirt with him since he was with his girlfriend. He said about a dozen in three months. His girlfriend, also on that forum (actually, they met through said forum), merrily told that it was only counting the ones he noticed, in fact there had been much more.