Give it a try. You will be so slow that you will not be actually running. There's no way you can call such a slow pace "chronic cardio" or even "cardio". I did it for a while and barely got any faster, but I did get to a point where I could run for hours. The longest run I went for was almost 3 hours. It was sort of fun but I didn't feel like it was doing much for me. I've gotten a lot more of a feeling of progress and making real changes to my health and my body through strength training and sprinting, the opposite of what he recommends. Perhaps we are all wired differently.
Female, 5'3", 49, Starting weight: 163lbs. Current weight: 135 (more or less).
Starting squat: 45lbs. Highest squat: 167.5 x 2. Current Deadlift: 190 x 3