With a paintball goggle, if you shout, its seems pretty loud right? When you take off the goggle and should at your mate, they hear you 10 x better.
Remember when Dynasty all used to flip the mouthpiece up on their JTs? Well reason is for communicating. Not looking agg, or trendy, which many people thought was the idea, but for clearer, louder shouting, communication, teamwork.
Now, Im not excusing lifting goggles up at all, but I imagine, in the moment, when you want to win no matter what, he raises them up past the mouth and shouts "chicken in the coop!" or whatever Pros shout at each other.