Well, when you use rope to fly from building to building that is what I call "spiderman shit". And when someone is able to it, with all the acceleration, fiber resist, and other stuff involved. That is what I call a "hero" in the same way I call batman a hero : they are defying what we know about human possibilities and material resistance.
Let's say it is a distopia where there never were any fighter jets (I never saw any clue in that show involving that, but whatever), it don't change the fact that any recent weapon system (from a WPPK handgun to a towed missile launcher) is way more powerful to penetrate skin, muscles and bones of the neck than swords.
And don't tell me that's because no one tried to shoot there, that is fucking senseless.
Only remain the magical metal made swords, which, not even mention to the obvious "make bullet out this magic metal ffs" is too much magical for my taste.