They are airsoft guys which I don't get and is not my thing but the video is hilarious and makes a good point. Just because you can attach a pouch does not mean you should. Every piece of MOLLE webbing does not need to be filled with a pouch.
You need ammo, some basic survival stuff like a knife, fire starter and whatnot, water to last until you get back to camp/ your ruck and that is about it. Figure out what fits your situation and put it all together then use the thing. Shoot and move in the kit you plan to fight with. You may find out that it gets heavy fast which means you should cut out some unnecessary stuff and or do more PT.
Anyway I hope you enjoyed the video.