Originally Posted by Excelsior.
He still cast her, so yes, he could still be 'blamed' for it. He isn't a child who is only led by other people and can't make his own decisions albeit by the advise of others.
That's true. I meant to say that Singer is not to be blamed *fully. Just a tad bit. Spacy was quite big at that time, so could have had some influences on the casting process. Also, Singer had to be knowtowing to WB - unlike Marvel which allowed for much leeway. WB was and is still an old style studio.
My only critism of Singer was how he handled the story for Superman Returns. He had some control over it, so he could have provided Bosworth better materials to work with.
He could also have listened & take some advices from some people on his team like having more actions and better villains (I couldn't recall who the person was). He left it a bit too late as evidenced by his "going all Wrath of Khan" comment on the Superman Returns sequel.