My point is they haven't seen or experienced the threat yet. That's why it isn't so scary from their viewpoint, for now. If I have a gun pointed to my head I'd be crapping in my pants because it's just a couple of centimeters near my temple. For the Ultimates, they know it's an alien threat, and they've beaten down the Chituari, but have no first hand experience of Gah Lak Tus itself. Honestly the worst thing they could do is sulk about it. That's not exactly good for morale, which should severely cripple their fighting capabalities. Also, it was downtime before Fury scheduled a conference to develop their battle plan.
I admit though that Johnny yapping about kegs while Reed was working with the Star Drive was a little too much considering that how busy Reed probably was. Ellis' depiction of Thor may be taking the laid-back hippie personality a little too much although we already know that Thor likes to drink considering one of his hangouts are bars.