I have one
The small dromes, known generally as quadracopters weigh a hundred gramms or so, I have two but the range is limited to a couple of hundred metres from the TX so unless you are airside or being pretty stupid, they wouldnt be a threat. Also they tend to drop out the sky why they go out of range.
The bigger ones are expensive, £350 for the smallest one so I dont think the lazer pointer idiots will be going there. Besides for for the non commercial user, there is a whole host of CAA regs to abide by.
Lets not panic yet.