Solution would be to show it prominently earlier in the film, but it's the fault of the audience. They were clearly visible during Adrian's introduction, where he's looking out his office windows. I even noted that as a good moment to show them.
I'd venture to call them NY's most prominent landmark, while they were around, but I don't think they had any particular significance here, and you can't have them destroyed in the attack, for political reasons, so there you go. They're going to have to be there, so may as well place them front and center ("won't this look neat").
And I agree... I never cared about 9/11, but by this point, I won't even grant them the courtesy of politely sidestepping it.