So you obviously missed the point of the post. Everything you say here is based on an assumption. It's all information you are trying to justify with yourself to make sense of why you don't like a certain aspect of the film. I'm saying it's just as easy to assume the other way and say that while laying in the hospital bed high on pain meds looking out of one eye at a man wearing a ski mask, which we'll also assume is this one...
...there is a very real possibility he would have had no earthly idea that Batman and Bruce were the same. I don't know about you but I can't see anything behind that mask that would let me know who he was.
It loses no charm when you understand that Batman is whatever anyone writing him wants him to be. There are absolutely issues with the film, but none of them should involve assumption based critiques, or completely false information.