From Lace:

The video wasn't intended to show anything beyond basic things that I've seen frequently done wrong or misused. I didn't even cover burst as if someone can't properly use or understand the tools they have, they certainly won't understand how to burst, let alone climb ranked. The Wolf Pup's Den exists to help players seek deeper answers or learn more, and I make myself available there as well. But for all the preloading MCH I see in ANY mode, or the ones that blow Stun Gun just to overheat, this was designed to explain what seems unknown for all the people now interested in picking up a gun.