Using your video as an example, I can tell you for a fact that the kimura style method of immobilizing the arm on the pistol draw at 5:30 there is widely taught to LE and military currently. It's simple, it's gross motor, and it has solid real world results. Is that important to train? Probably not for most people. But if you are LE or military, yes, it's considered important. And most of the training looks pretty similar to that. Some better units will do those with full resistance as well, but there still seems to be decent benefit in even the more static training.