Only bad writers. Or at least, writers who don’t know what to do with the characters.
How many times have we seen comics characters go down in flames, even die, only to see them rise up again “because you demanded it?”
My favorite examples of this come from the DC Comics universe—Green Lantern, The Flash, and the Justice Society of America. (We’ll ignore Superman and Batman for the moment.)
It was about 20 or so years ago that the good folks at DC decided that nobody could write The Flash. After all, he’s so incredibly fast that he could solve any problem as soon as it happened. It was impossible to challenge him. Or so we were told.
