"I find it funny when you guys call sleeping in the ditch or wherever "stealth" camping.
Back in the day we called it sleeping in the ditch....."
I don't think giving it a name is a huge problem. For instance, in most cases sleeping in a ditch would not be stealth camping, since it would normally be out in the open on public property. Stealth camping is about stealth. If you sleep in a ditch and don't care who stops and takes you up on it, that isn't stealth camping. If you move your tent behind a really big bush so that nobody will see you, barely 10 feet different location, and you did it so nobody would see you, not because you needed a wind break, then that is stealth camping.
You ask the locals where you can camp, they say behind the church, and you go there, that is one thing. You sneak in behind the church tight to the building so you won't be seen, on a day when the sign says no services, in the dusk etc... That could be stealth camping. It is all about your objectives when you picked your spot. But I still agree it is pretty much common sense. Any time you pick a site, you probably survey it for a number of characteristics, for instance I always look at the lay of the land to make sure a car can't just pull in for parking etc... and run me over. I look for areas where water will pool, or the surface would be too hard for a tent. To me stealth was just part of the package. My first truck was brown, so that I could pull in off the road and leave it for a week or more when hiking or paddling. I had a stealth truck...