I hate to give this stupid video more hits, but it is an almost perfect example of the idiocy you see on YouTube that claims to be "shooting instruction."
No, that's not how it's done. No way. This guy is a crackpot. If you follow his instruction, you will not shoot well on the move.
Here's the right way to move and shoot. It's a longer video, but well worth it.
The internet is chock-full of self-proclaimed shooting experts. Choose your instructors carefully. And just for the record, I don't claim to be one.