He's addressing a convention of what's probably wedding shooters; people who will often have hundreds of prints made per week, perhaps thousands of prints made per month. As he pointed out, you'll hear people urging the use of AdobeRGB in-camera based on its wider gamut, but as he pointed out, that often leads to muddy reds in prints, and overall, images that look like crap when viewed by "many people", in many software/browser/web environments.
He's advocating capturing the images using the camera set to sRGB mode, with the in-camera sharpening set to Off, with saturation set low, and with the contrast or tone curve also set "low". And then using evaluative or matrix style light metering.
He's talking about how to shoot photos that look "right" on the vast majority of computers world-wide, and which are already in the expected color space by the huge preponderance of printing-out machines world-wide. And by the majority of computer set-ups world-wide. He's not talking about the one,lonely guy who sees his images on his perfect monitor and looks at them in Photoshop with a black border around each image.
The same "shoot sRGB" theory is espoused by a number of people who shoot images that are designed to be seen on the web, or on the computers of MANY different people, and images which are destined to be printed by automated machines made by Fuji or Noritsu. This is very,very different than the kind of advice that you'll find from single-computer users in internet forums. He even mentions that very subject at the start. Now that we are more than a full decade into the 21st century, there are some cameras that can shoot gorgeous SOOC images, and I'd bet money that Gary is still advocating shooting in-camera JPEGs shot to a good custom white balance, and also using adequate fill lighting/flash if it's needed.