Actually, I absolutely agree with this. The tactical turtle is GREAT for controlling recoil. I starting using it when I was doing a long term test on polymer guns in .40 cal, because it helped keep the gun tracking better on single targets. In fact, for the majority of shooters who are interested in self defense, locking the support elbow and rolling the shoulders forward aggressively is probably a really good training decision, because there are very few shooting environments the average CCW holder will get in that you can't solve with the TT.
It goes back to the 80/20 ratio - 80% of the people who want to shoot better are going to see benefits from using a more "turtled" stance, if for no other reason than it offers tremendous mechanical advantages in recoil control. The other 20% of shooters are looking for performance above and beyond that are going to need another technique.
As I've been writing Gun Nuts for 8+ years now, I've seen my shooting stance go from Weaver to Iso to Tactical Turtle to aping JJ Racaza's stance. I've made those changes because I've realized that a change here or there is going to give me the next level of performance boost that I'm looking for. In 2011, I went from C-class in USPSA to A-class in about 6 months, and I was shooting a fairly turtle stance. Now I'm looking to break into the next tier of skill, and turtle doesn't cut the mustard on transitions and movement.