This is a demonstration, not instruction. Be sure to seek professional instruction for any firearm drills you plan to run in your own practice.
This is a very contextually specific drill, as it is not always safe and appropriate to take lower-percentage shots like this in public; bystanders may make it wholly inappropriate. However, I think it is important to develop a high skill level for shooting accurately while moving quickly.
And, yes, it’s galling to watch that first-shot miss over and over, but that’s why they call it training. I still have plenty left to do.