I found the above article very refreshing. Most pistol technique articles are informed by IPSC/IDPA/3-Gun from the get-go. Which is great if you get into gunfights on the square range, but maybe not super applicable to the average gun owner or even LEO.
And I was pleased to see mention of the crush grip as taught by Ayoob, who if memory serves learned it way back from an LEO instructor from S&W back in the revolver days. YMMV, but a grip that works fairly well from one-handed retention all the way out to two-handed at 25 yards is more practical IMHO than a grip developed to generate tighter groups and faster splits at 25 yards.