This issue is kind of a slippery slope, because there ARE some valid reasons to customize the in-camera image adjustment parameters, but this also "depends" to quite a large extent on the exact, specific camera one is using. Different cameras have a different degree of "pliability" or "workablility" or "malleability" to their out of camera JPEG files. Some of the newer cameras, that use "Picture Styles" to custom tailor their images allow the user to set various types of proven pre-set parameters so as to tailor the JPEG output to a specific direction. Also, if the shooting volume is high, and the time constraints are pretty great, it's sometimes easiest to shoot RAW+JPEG, and set the camera up to output a JPEG image that has some sharpening applied, and also has Noise Reduction applied, and maybe even a custom tone curve applied to the image. if you need to cull through very large takes, like 300 to 800 frames from a sporting event, it's easier if the in-camera sharpening has been cranked up pretty high, so you can spot dead-on focus from ever-so-slightly soft focus. Some of the new Nikons that use the Picture Styles concept, like the D7000, are apparently "over-developing" their images, according to Thom Hogan's articles on the D7000, meaning that that specific camera model's default tone curve and image brightness is SIGNIFICANTLY higher that than of earlier Nikon bodies.
Not sure what camera or cameras Schram has been using; it's very possible that he's been shooting something like, say the Canon 5D classic for a while. It has a pretty tame, natural, neutral-looking image at its default or baseline settings, a lot like Kodak's old VPS NC or Natural Color film...not all "wow!" or "Whoa!"; the Nikon D50 by way of contrast, had almost eye-candy-like color saturation when used on Direct Print; same with the Nikon D40 while on Vivid mode--"eye-candy" output.
The biggest drawback in jacking up the contrast is that the in-camera-generated JPEG file is what the histogram is read from, and if that JPEG's settings are massively tweaked, the histogram will show that you have exposed fully well before the wider Dynamic Range .CR2 or .NEF file has been exposed all the way "to the right". If one sets the image contrast higher than normal, the histogram will indicate overexposed "blinkies" much earlier than needed for a wide bit-depth RAW file...so,there is some rationale for not adjusting the default values. But it does depend on the camera, and how it tend to meter and expose in your hands.