Ray Jardine, claims to have coined the Phrase "Stealth Camping". I do not know about that. I was Stealth Camping probably about the time Jordine was making a name for himself. Really close in age, and sort of traveled in the same groups. It was a pretty select group of folks back in the late 60's early 70's. Not very many of us and we kind of knew each other either by sight or reputation.
I started with the invisible camps because I am female, and travel alone. It is better to be invisible, easier to avoid any problems that being a single female alone presents. When I had children we made a game of blending in with our surroundings. These days it just depends on where I am camping. I have a ENO DN that is very obvious, my Hennesseys blend in. My tarp I use when Kayaking is bright orange, just incase I have some sort of emergency. Sometimes it is helpful to be seen.
I even carry the stealth vs obvious in my clothing, I have clothing that makes me almost invisible, in the shade or when the light is fading. I have really bright stuff that almost no one can miss. Just depends on the situation.