I'm serious, though. As "call and response" dialogue goes, having an actor repeat something that was said earlier in the movie...there simply wasn't the emotional impact in this film with that kind of thing like there was in the other two. The actual placement of that type of dialogue was just kind of lazily handled, with the exception of "I know who he was. He was The Batman."
The whole "You have my permission to die" bit, was just kind of tossed in there. It's like the writers realized "Crap, if Batman doesn't say this at the end of all these 'Where's the detonator?'s, we won't be able to put this line in again."
It had none of the impact of the admittedly cheesy "It's not who I am underneath" line, or Alfred's "Nevah", or "You either die a hero, etc".
It's like they ran out of stuff for characters to say, so they reverted to what they do best: having characters echo other characters, but they did it kind of randomly. In general, it felt really tacked on and unimportant to the characters and the plot. I think in part it's because the writers in this series have tended to use this type of dialogue for "lessons" the characters have learned, but there weren't really any lessons learned this time around that involved it.