You’re talking about a J-3, right? Try it in a Supercub. Better yet, try it in a 225hp Cub with leading edge slats and deep chord 9’+ split flaps that deploy to 70*! This topic doesn’t apply equally to all planes. I don’t fly my Cessna the same as my Cub. I can take both to the ground behind the power curve and do, but it’s different. The same is true for your Cub and my Cub.
In high power-high AOA it’s all about rudder. This pilot is one of the best STOL guys there is and he got bit while trying to maintain that attitude without landing. Nobody’s immune.