Aren't there any other old guys here? Listen, my children, once upon a time there was a photographer who used very small little cameras so as to take pictures discreetly of people in public doing what people in public do. Nowadays, we call that "street photography." He used a little understood material called "film" to record his imagery on.
Henri Cartier-Bresson didn't want people to pay attention to him photographing, he wanted people to continue to do what they did. The little cameras he used came with a shiny metal top that drew attention. Eventually he began taping over the shiny metal, including on the lenses, with black tape--to avoid reflections and to make his cameras even more discreet.
So, over the years, news photographers would pay homage to the Godfather of photojournalism by taping over their Leicas, Nikons, Canons, Rolliflexes, Hasselblads until the manufacturers one day decided they would start offering their product in all black bodies. This is before your time. You probably think the few chromed bodies offered are a recent innovation.
The one thing the manufacturers couldn't bring themselves to do was to put their name in a discreet location, so they leave a very visible white logo on the front of the cameras. Photojournalists, once again emulating the master, tape over the logo to keep their cameras discreet, non reflective, and to avoid drawing attention to their cameras.
That's the truth as I learned it before you were born, so there!
So whats discrete about a 1DmkIII with a big white 600mm L telephoto lens?