You know what you can easily do drive a truck into a crowd of people or fill your car with explosives in park it under a building and then blow up the entire building, but people aren’t doing that every day but continue whingeing about drones
This is true, but the thing is, at least in United States, its not a matter of lack of talent to build these things, its mostly a lack of need to destroy stuff. Given how things are going in the world, where an assasin is currently being celebrated, I dunno if this is gonna hold.
I will point you to this: https://www.reddit.com/r/ForgottenWeapons/comments/15gd3nj/m....
In the same way, it can very well be possible to make these things under $300 with mass produced kits. Hook up a gps chip to it, and its easy to make it waypoint navigatable without manual control
The advantage of a drone is that the level of separation between the assailant and the crime goes up so much that it becomes next to impossible for Law Enforcement to assertain a suspect.
With this a lot of damage can be done even without drone. As for weaponized it's not a future, it's a reality in Ukraine for years now. Defense against them is difficult to impossible. A bodyguard who can sacrifice himself may sometimes work.
(EDIT: I'm assuming you are talking about non-military use.)
I could see Cartels using this to take out targets.
https://www.theguardian.com/uk/2003/sep/14/colombia.world
So it isn't an entirely new concept.