I honestly believe that the best part of that video is the 15 minute clause (get it, "clause"... "Mark 'Lizard Lawyer' Ellis"... get it? get it? Eh eh? ... Sorry). There are some days where I can go 300+ putts in a row without losing focus. But most days? If I'm still putting after 20 solid minutes (everyone has different breaking points, but its usually right around 15-20) then I'm probably letting my form slip and I'm putting silly, and mixing up what I'm doing. A break to throw drives at around 15-20 minutes is necessary and I may not have realized that without the video.
I definitely took the 15 minute break to heart. The rest of the routine is *TOTALLY* arbitrary. There are a MILLION different routines you can use to build a great putt. But understanding that limit - where you lose focus and form falls by the wayside? Huge. Definitely a useful video.