YES !!!! you have a right to protect your privacy , and in some ways you could look at it as trespassing onto your land , flame them all !
THey are a very useful tool in some cases , they are small , very portable , and good for spotting . They are using them on both sides of the Ukraine war because of that .
A few people that do urbex and other exploration , use them to map out the best route for their 4WDs , like the guys that retrace old route 66 and explore abandoned mines .
Unfortunately , they could also be used by a new breed of criminal , to scope out your house , etc.
I say shoot them down .