Overall, he's making a good point, but my concern is the way he is making it.
First, his whole premise is to save time in the pattern for other traffic. That may be a good goal, but not at the expense of getting in over your head. Second, expecially at short runways, the worst delay of time is to turn so tight you end up having to go around!
The one thing he did say that I totally agree with is turning base when on downwind you reach a 45 degree angle to the runway leading edge off your rear shoulder. That's a very good rule of thumb.
However, I really cringed when he talked about glideslope. There is a great deal of risk in coming in too steep, especially for inexperienced pilots (and that includes pilots inexperienced in aircraft type). Steep glideslopes often result in excess airspeed. I realize he isn't trying to imply you do this, but the point he ignored entirely is that one often leads to the other. Arriving at the runway threshold about 5knots hot can often increase landing distance 25%. And that extra time coasting down the runway could end up causing more delay that making a more manageable final approach.
Practically speaking, there is nothing wrong and everything right with a standard three degree glideslope on final. Yes, there is a good point about leaving yourself enough altitude if your engine sputtered on final that you could at least make the runway. Yeah, I know that might not help on crosswind or early on downwind, but at least you saved yourself the option when you really are low and slow and out of options. Also, you may need to adjust your glideslope for wind. If you are flying into a very strong headwind on final, then you need a higher glideslope to avoid getting drug in. This is because you have a very slow groundspeed on final. You need either a much shallower descent rate (by definition drug in) or a higher initial altitude (by definition a higher glideslope).
I also liked his point about lining up the halfway point of the strut or wing with the runway while on downwind. Normally that does put you at the 1,000 foot AGL altitude at a reasonable offset for downwind.
My overall pont is that I would prefer that GA pilots not worry about how long they are taking to land. Just land safely. If you keep yourself to a normal VFR pattern, I'll guarantee you'll take less time in the pattern than it takes a tubeliner to go from the IAF to FAF to touchdown. And last I checked, the airlines aren't terribly concerned if tower has to send you as a GA pilot on an extended downwind to accomodate them!
Cheers,
Ken