Let’s not forget what’s possible 20 or 200 years ago. You can poison water supplies, you can stab people on the street, you can crate rail guns shooting out nails, you can drive giant semis into crowds of people, you can bomb or otherwise derail trains, etc etc. The ways to inflict carnage are great. But it doesn’t happen all the time, because most people aren’t seeking out murder on a repeated basis.
Yes we should find ways to defend against new kinds of attacks on common infrastructure that causes asymmetric levels of worry, but so recognize humanity has always had the potential to do damage.
The thing is: with most of what you're talking about: the level of risk taken was pretty high. With drones and other kinds of automated devices, the risk is going to drop near zero.
In other words, the real life will be as scary as the internet.
Yes we should find ways to defend against new kinds of attacks on common infrastructure that causes asymmetric levels of worry, but so recognize humanity has always had the potential to do damage.