Originally Posted by
SiegePerilous02
I think it's more likely Snyder included those lines because he thought it'd be cool to include them because they were in TDKR. Not that they work nearly as well in the same context. It would have been better with different dialogue.
So Batman only cares if a sentient being has human parents? And then kills a few more dudes after that anyway? That's pretty awful.
None of that is in the movie, and is just fan theories to make sense out of a scene that just isn't very clear in what it wants to say. The earlier dialogue of "my parents taught me something while they were lying in the gutter etc" is lifted from TDKR because that's the comic the imagery and basic setup is being borrowed from, and I'm not sure any deeper intent was put into it beyond "it's a badass thing Batman says in the comic, it should be in the movie.". But in the context of the comic, Bruce had a long history of friendship with Clark and knew his origins and about his Earth parents. He doesn't know that here, but the line is used without altering/elaboration that he could be talking about other aliens. It's shallow.
Not to mention plotting to murder a man that hasn't done anything wrong just because he might be dangerous, and not caring about his parents until he learns at least one of them is a human, makes him look awful. Yeah, there are comics that have Batman be racists against metahumans or whatever, but those comics and portrayals suck. Yeah, this version has PTSD but we don't know this version well enough to care. it's relying on people bringing in their knowledge of Batman to do the legwork of making them care. It's a dodgy plot idea to begin with, but if we saw the BTAS or Nolan Batman descend into violence and lash out this way we'd have more of a foundation to be invested. It's a lot to ask of an audience right out of the gate.
A better way to break through to Batman would be for Clark to learn that Dick Grayson was dead and try to empathize and connect with him that way, because since becoming Batman it would make sense that that was the single biggest traumatic experience he had. But no, Dick's death is barely a footnote here, Snyder said he would only hint at it further in JL (when it should have been dealt with in this) and we get the "MARTHA!!" meme instead.