>>715257302anon, now you're just delusional. They're not only standing around, they're also crouching for no reason which limits their movement, walking slowly when out of cover instead of rushing to another spot and standing right next to each other as a group (while out of cover and fighting someone who has 20 grenades and a rocket launcher btw) sound like easy ways to get shot. And even though the player in the video isn't taking any damage, which is definitely not representative at all of the real game, that doesn't excuse the enemies being dumb.
And even then, I gotta somehow tolerate a lot of suspension of disbelief, in a pure gunplay video, because no map in the game is actually designed like this, and a lot of the time, the enemies won't have any proper cover at all