We also don't say we should ban cars, which in theory would save up to 35k lives/yr. I can certainly see a person in lower Manhattan theorizing that no one "needs" a car. Public transportation and approved and licensed cabs can take everyone everywhere. Which is completely true. Still, my own idea is that I would like to go where I want, whenever I want, in my own vehicle. Which I guess might be taken to mean I clearly don't care about the 35k dead people, but I have a hard time making the same connection myself.
Since the first time I saw a bump stock several years back I thought they were stupid and dangerous and should be banned. Not just because of the fire power, but also because I figured some of these idiots would shoot themselves or others accidentally, although I'm not aware of that actually being the case. They will be banned, or there will be a bill that doesn't just ban them, but does a bunch of other stuff that congress will fight over. But
again, it's $30 and a ten year old's mechanical aptitude to accomplish, which isn't to say it's not worthwhile to enact a law, rather just that if someone has bad intentions it's simple to get around.