That is one of my growing peeves with some of comic fandom; people only complain about character derailment, random bouts of idiocy, and sudden incompetence when it happens to their characters.
Sometimes there's a thin line between "My favorite character should be awesome" (a perfectly reasonable position) and "My favorite character should be awesome, therefore every other character should suck to show how awesome s/he is."
Oh well, at least it's not as bad as Green Arrow and Black Canary suddenly incompetent damsel in distress.