If people working in security forget about it then they should be fired for being incompetent, but people who are not involved with such things, and have no reason to remember 9/11 because they weren't actually hurt by it have understandable reasons to not care about 9/11, the world doesn't revolve around US of A and its problems.
Look on the bright side, being killed by a parasitic cannibal suit is a way more metal way to die than just by cancer, sucks if someone without cancer dies by it anyways though
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The game shows the symbiote on the plane:
At 54:03, dunno about the comics.
Imagine surviving a fucking Hulk attack only to die in a plane crash, talk about lame
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Yeah that was part of the reason Ultimate comics started to suck (Even if there wasn't much good shit outside of Spidey), it became about as convoluted as 616, with not even 1/3 of the time of publication, think even without Ultimatum it would be doomed to die off eventually, all Ultimatum did was speedrun its death, although it surprisingly lasted for a while even after that.
Ultimate comics ending at Ultimatum would mean no Maker or Miles, so it'd be significant to have ended that early.