Why does Batman laugh so much in All Star Batman and Robin, the Boy Wonder?
There’s a number of possible, more-or-less mutually inexclusive answers.
First, maybe writer Frank Miller is completely fucking nuts, and simply has no control over what his fingers are doing anymore, which, naturally, is why he’s been entrusted with creative roles on expensive movie projects.
You’d be surprised how many times this theory has been advanced to me by a straight face by people you’d think would know better. Or I dunno, maybe you wouldn’t.