These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
After 9/11, the NSA quit referring to Zeta as a terrorist or talking about terrorists. In Real Life, the NSA began focusing more on terrorists after the events of 9/11. Doubles as Harsher in Hindsight.
Like You Would Really Do It: Bucky's attempted use of Zeta as a murder weapon doesn't work out, but the fact that he got to blatantly attempt to force someone to murder another person is astounding by today's standards. It's worth noting some people found the episode to be without tension, however, because - see the trope title - it's a kid's show. They can't show that!
The world outside of Gotham is portrayed as equally as corrupt and dystopian, the CIA and FBI seem nowhere to be found and the NSA is shouldering the workload of all three organizations as a result, making them judge jury and executioner in many situations. Just watch Agent Bennett casually pull rank and say it's somebody else's problem in Countdown and realize he never, ever suffers consequences for it. However it is that the justice system works in the future, it's terribly broken.
Agent West if you believe the commonly accepted fan theory he's descended from Wally West, as his existence implies Wally is old enough to be a Disappeared Dad (which is highly unlikely given Wally's personality) or dead (which is much more likely given the setting and the lethality of the DCAU). Flash fans were not happy with the implication Wally died inbetween The Justice League and The Zeta Project.
The Woobie: Macy, the girl who appeared on the show Ro went on to find her brother. After dealing with a Disappeared Dad, her mother vanishes and might in fact have been killed by a hurricane. She then goes on TV in a desperate bid to find her mother, unable to believe she's dead. Said show cruelly tricks her, gives her a Hope Spot where she meets a woman made to look like her mother, and the next day she's thrown back into the foster care system. The kicker? They never give her a happy ending. While the host of the show says at the end she'll work to actually help the people they've hurt, there is virtually no chance of a woman in a hurricane zone being alive years later. If she is, then that Hope Spot is tainted, too, because they state many people were affected by the trauma and forgot who they are. Macy's mother may be alive, but she doesn't know Macy exists. Macy is also ten years old when she's on the show, meaning she was even younger when all this happened. Downer Ending is an understatement.