I think you should defeat any manual safeties as soon as the pistol is pointed toward the target, because you might have to shoot from a compressed ready (close contact) position. Waiting to get the sights on target before defeating the safety is a bad idea. (Actually, he doesn't explicitly say when he has defeated the safety. I just figured it out from watching the video.)
I think jacking rounds out onto the ground is a bad idea. Ammunition in combat is extremely valuable. This may leave a training scar.
I think not watching what you're doing when holstering is a bad idea. Too many things can get stuck in your holster while holstering. If you feel you have to keep your head up and looking around, you should not be holstering your pistol in the first place.
I have yet to find two instructors who taught the same techniques. That's why it is so important to take classes from different instructors. Otherwise, you may have the misconception that there is no other reasonable way to execute that operation.Also, be sure to scroll 2/3 or so down his post where he discusses his recommendations on selecting a holster and selecting a defensive handgun.