FullWings:
I think BOAC is trying to point out that trying to be "gentle" on a GA at low level is a risky strategy and frowned on by most instructors (to the point of re-training being necessary).
I guess we need to define what is "gentle," what is "robust," and what is "excessive."
The most important action to minimize descent below DA or keep from going below MDA is proper control of attitude and sink rate, whether with automatics or flown by hand. Obviously, if power isn't applied at the same time, the speed is going to decay. (then, it short order flaps to what is appropriate for GA) But, assuming sufficient power to keep the speed from decaying, the first order of business is achieving target attitude.
If the power were applied a bit slowly but the other elements of configuration are done correctly, the airplane will climb, albeit at less than the maximum possible ROC. Since most missed approaches are predicated on a 40:1 OCS, ROC far less than maximum will easily keep you out of the weeds.
Application of GA thrust, of course, is the name of the game, but getting to that maximum thrust setting quickly is not as important as attitude and flap reconfiguration, assuming a "sufficient" application of thrust.