And I do believe this. I also believe that you have much more direct training and time with a SERPA than I or most people reading this.
But that doesn't negate the fact that some other people's experiences have been different, and that it was directly linked to the poor design of the holster and its locking mechanism, which this thread is highlighting.
Not arguing those points though am I...
For my needs, the Serpa on a thigh rig is the most useful and comfortable currently out there. When a better one comes out I will try it out in training and evaluate it, and then maybe use it as part of My Kit.