Hmmm... I don't know that "canonwhoredom" or supporting a single (or small number) of privileged readings of canon is necessarily a gendered trait, though. I've seen plenty of female fans do it (in a sense, it's what some of the HP ship wars were about), and I certainly do it myself when it comes to Marvel comics (and I'm a woman). I'll be the first person to point out that, no, ficwriter, you've got Iron Man's age off by six years, or that Daredevil's powers work like such-and-so -- and cite issue numbers as evidence.

This makes me something of an anomaly in lj comics fandom, though, since it leans heavily toward DC, and most DC writers prefer to keep only a tenuous connection with canon (to be fair, their canon is much less consistent than Marvel).