Earlier quoted context omitted.
Uh, there is a technical reason on demonstration as well. Don't try so hard to be that guy. "Take authentic, accurate portraits with Real Tone. Portraits on Pixel represent the nuances of different skin tones for all people beautifully and authentically."
But that's the point, they don't show all popular skin tones on those portraits.
The point is that now they've broadened the range where the camera works well. So they are showing what's improved.