It's always been pretty clear that there's a massive overlap (to the point of possibly being a single Venn diagram circle) between a certain kind of trans male and narcissism. After all it's kind of inherent in wanting to have sex with yourself.
However, I do have to applaud Eddie Izzard for both taking this to new levels and making it so blindingly apparent. So much of what he does (stand up in different languages, marathons, now this) is to prove that he is some kind of uber-being who is superior to everyone else. And I can bet you anything that he wouldn't listen to anyone who would tell him otherwise.
Someone (who isn't me because I've got a shed load of work to get done today) could unpick this more with reference to his past, but I've recently had to work with someone a bit like this, who nearly drove me to a nervous breakdown, hence the username. And the rage when they weren't the best at something was quite a thing to behold.