Google Earth probably can’t look in your windows.
A high quality drone can look in your windows and if the windows are closed you probably won’t see or hear the drone. With the quality of cameras available these day they can count the hairs on that mole on the back of your neck.
I guess I’m just not too concerned given that this very post is being monitored and we all know it. The government has totally obviated the notion of privacy and I suppose I find it somewhat reassuring that private individuals should have the capability to return the favor to the government. If that means someone could have a video equipped RC helicopter over my property then so be it. As long as it doesn’t bother the chickens or the bison it’s no big deal to me.