Well, exactly. They would have done. Just like they would have had the rubble of Ground Zero cleared by September 18th at the latest, and it damages the coherence of the fictional universe to suggest otherwise, as well as looking a bit clunkily Issue Episode. Which is not to say that I don't think superhero comics can address this stuff, I just think they do it better when they do it obliquely - whether that's mutants as a stand-in for real-world minorities. or the issue of Ultimates set in New York after a Hulk rampage, which handled post-9/11 trauma brilliantly precisely because it used a world-appropriate surrogate incident.
Re: No spoilers!
Which is not to say that I don't think superhero comics can address this stuff, I just think they do it better when they do it obliquely - whether that's mutants as a stand-in for real-world minorities. or the issue of Ultimates set in New York after a Hulk rampage, which handled post-9/11 trauma brilliantly precisely because it used a world-appropriate surrogate incident.